Propiedades
General
Mecánica
| Property | Temperature | Value | Comment |
|---|---|---|---|
Alargamiento A2 | 23.0 °C | 35 % Show Supplier Material materials with Alargamiento A2 of 35 % | min. |
Creep strength 10^4 cycles | 600.0 °C | 241 MPa Show Supplier Material materials with Creep strength 10^4 cycles of 241 MPa | at 10000h |
610.0 °C | 231 MPa Show Supplier Material materials with Creep strength 10^4 cycles of 231 MPa | at 10000h | |
620.0 °C | 221 MPa Show Supplier Material materials with Creep strength 10^4 cycles of 221 MPa | at 10000h | |
630.0 °C | 210 MPa Show Supplier Material materials with Creep strength 10^4 cycles of 210 MPa | at 10000h | |
640.0 °C | 198 MPa Show Supplier Material materials with Creep strength 10^4 cycles of 198 MPa | at 10000h | |
650.0 °C | 184 MPa Show Supplier Material materials with Creep strength 10^4 cycles of 184 MPa | at 10000h | |
660.0 °C | 167 MPa Show Supplier Material materials with Creep strength 10^4 cycles of 167 MPa | at 10000h | |
670.0 °C | 147 MPa Show Supplier Material materials with Creep strength 10^4 cycles of 147 MPa | at 10000h | |
680.0 °C | 124 MPa Show Supplier Material materials with Creep strength 10^4 cycles of 124 MPa | at 10000h | |
690.0 °C | 102 MPa Show Supplier Material materials with Creep strength 10^4 cycles of 102 MPa | at 10000h | |
700.0 °C | 86 MPa Show Supplier Material materials with Creep strength 10^4 cycles of 86 MPa | at 10000h | |
710.0 °C | 75 MPa Show Supplier Material materials with Creep strength 10^4 cycles of 75 MPa | at 10000h | |
720.0 °C | 67 MPa Show Supplier Material materials with Creep strength 10^4 cycles of 67 MPa | at 10000h | |
730.0 °C | 61 MPa Show Supplier Material materials with Creep strength 10^4 cycles of 61 MPa | at 10000h | |
740.0 °C | 55 MPa Show Supplier Material materials with Creep strength 10^4 cycles of 55 MPa | at 10000h | |
750.0 °C | 51 MPa Show Supplier Material materials with Creep strength 10^4 cycles of 51 MPa | at 10000h | |
760.0 °C | 46 MPa Show Supplier Material materials with Creep strength 10^4 cycles of 46 MPa | at 10000h | |
770.0 °C | 42 MPa Show Supplier Material materials with Creep strength 10^4 cycles of 42 MPa | at 10000h | |
780.0 °C | 38 MPa Show Supplier Material materials with Creep strength 10^4 cycles of 38 MPa | at 10000h | |
790.0 °C | 34 MPa Show Supplier Material materials with Creep strength 10^4 cycles of 34 MPa | at 10000h | |
Creep strength 10^5 cycles | 600.0 °C | 199 MPa Show Supplier Material materials with Creep strength 10^5 cycles of 199 MPa | at 100000h |
610.0 °C | 185 MPa Show Supplier Material materials with Creep strength 10^5 cycles of 185 MPa | at 100000h | |
620.0 °C | 167 MPa Show Supplier Material materials with Creep strength 10^5 cycles of 167 MPa | at 100000h | |
630.0 °C | 147 MPa Show Supplier Material materials with Creep strength 10^5 cycles of 147 MPa | at 100000h | |
640.0 °C | 122 MPa Show Supplier Material materials with Creep strength 10^5 cycles of 122 MPa | at 100000h | |
650.0 °C | 100 MPa Show Supplier Material materials with Creep strength 10^5 cycles of 100 MPa | at 100000h | |
660.0 °C | 84 MPa Show Supplier Material materials with Creep strength 10^5 cycles of 84 MPa | at 100000h | |
670.0 °C | 74 MPa Show Supplier Material materials with Creep strength 10^5 cycles of 74 MPa | at 100000h | |
680.0 °C | 66 MPa Show Supplier Material materials with Creep strength 10^5 cycles of 66 MPa | at 100000h | |
690.0 °C | 59 MPa Show Supplier Material materials with Creep strength 10^5 cycles of 59 MPa | at 100000h | |
700.0 °C | 54 MPa Show Supplier Material materials with Creep strength 10^5 cycles of 54 MPa | at 100000h | |
710.0 °C | 49 MPa Show Supplier Material materials with Creep strength 10^5 cycles of 49 MPa | at 100000h | |
720.0 °C | 45 MPa Show Supplier Material materials with Creep strength 10^5 cycles of 45 MPa | at 100000h | |
730.0 °C | 40 MPa Show Supplier Material materials with Creep strength 10^5 cycles of 40 MPa | at 100000h | |
740.0 °C | 36 MPa Show Supplier Material materials with Creep strength 10^5 cycles of 36 MPa | at 100000h | |
750.0 °C | 30 MPa Show Supplier Material materials with Creep strength 10^5 cycles of 30 MPa | at 100000h | |
Creep strength 25x10^4 cycles | 600.0 °C | 177 MPa Show Supplier Material materials with Creep strength 25x10^4 cycles of 177 MPa | at 250000h |
610.0 °C | 158 MPa Show Supplier Material materials with Creep strength 25x10^4 cycles of 158 MPa | at 250000h | |
620.0 °C | 134 MPa Show Supplier Material materials with Creep strength 25x10^4 cycles of 134 MPa | at 250000h | |
630.0 °C | 109 MPa Show Supplier Material materials with Creep strength 25x10^4 cycles of 109 MPa | at 250000h | |
640.0 °C | 90 MPa Show Supplier Material materials with Creep strength 25x10^4 cycles of 90 MPa | at 250000h | |
650.0 °C | 78 MPa Show Supplier Material materials with Creep strength 25x10^4 cycles of 78 MPa | at 250000h | |
660.0 °C | 69 MPa Show Supplier Material materials with Creep strength 25x10^4 cycles of 69 MPa | at 250000h | |
670.0 °C | 52 MPa Show Supplier Material materials with Creep strength 25x10^4 cycles of 52 MPa | at 250000h | |
680.0 °C | 56 MPa Show Supplier Material materials with Creep strength 25x10^4 cycles of 56 MPa | at 250000h | |
700.0 °C | 46 MPa Show Supplier Material materials with Creep strength 25x10^4 cycles of 46 MPa | at 250000h | |
710.0 °C | 42 MPa Show Supplier Material materials with Creep strength 25x10^4 cycles of 42 MPa | at 250000h | |
720.0 °C | 37 MPa Show Supplier Material materials with Creep strength 25x10^4 cycles of 37 MPa | at 250000h | |
730.0 °C | 32 MPa Show Supplier Material materials with Creep strength 25x10^4 cycles of 32 MPa | at 250000h | |
Dureza Rockwell B | 23.0 °C | 90 [-] Show Supplier Material materials with Dureza Rockwell B of 90 [-] | max. |
Elongación | 23.0 °C | 35 % Show Supplier Material materials with Elongación of 35 % | min. |
Límite elástico Rp 0,2 | 20.0 °C | 230 MPa Show Supplier Material materials with Límite elástico Rp 0,2 of 230 MPa | min. |
50.0 °C | 213 MPa Show Supplier Material materials with Límite elástico Rp 0,2 of 213 MPa | min. | |
100.0 °C | 188 MPa Show Supplier Material materials with Límite elástico Rp 0,2 of 188 MPa | min. | |
150.0 °C | 171 MPa Show Supplier Material materials with Límite elástico Rp 0,2 of 171 MPa | min. | |
200.0 °C | 161 MPa Show Supplier Material materials with Límite elástico Rp 0,2 of 161 MPa | min. | |
250.0 °C | 153 MPa Show Supplier Material materials with Límite elástico Rp 0,2 of 153 MPa | min. | |
300.0 °C | 148 MPa Show Supplier Material materials with Límite elástico Rp 0,2 of 148 MPa | min. | |
350.0 °C | 145 MPa Show Supplier Material materials with Límite elástico Rp 0,2 of 145 MPa | min. | |
400.0 °C | 144 MPa Show Supplier Material materials with Límite elástico Rp 0,2 of 144 MPa | min. | |
450.0 °C | 141 MPa Show Supplier Material materials with Límite elástico Rp 0,2 of 141 MPa | min. | |
500.0 °C | 139 MPa Show Supplier Material materials with Límite elástico Rp 0,2 of 139 MPa | min. | |
550.0 °C | 136 MPa Show Supplier Material materials with Límite elástico Rp 0,2 of 136 MPa | min. | |
600.0 °C | 133 MPa Show Supplier Material materials with Límite elástico Rp 0,2 of 133 MPa | min. | |
650.0 °C | 130 MPa Show Supplier Material materials with Límite elástico Rp 0,2 of 130 MPa | min. | |
700.0 °C | 125 MPa Show Supplier Material materials with Límite elástico Rp 0,2 of 125 MPa | min. | |
Límite elástico Rp0.1 | 20.0 °C | 270 MPa Show Supplier Material materials with Límite elástico Rp0.1 of 270 MPa | min. |
50.0 °C | 254 MPa Show Supplier Material materials with Límite elástico Rp0.1 of 254 MPa | min. | |
100.0 °C | 232 MPa Show Supplier Material materials with Límite elástico Rp0.1 of 232 MPa | min. | |
150.0 °C | 210 MPa Show Supplier Material materials with Límite elástico Rp0.1 of 210 MPa | min. | |
200.0 °C | 195 MPa Show Supplier Material materials with Límite elástico Rp0.1 of 195 MPa | min. | |
250.0 °C | 190 MPa Show Supplier Material materials with Límite elástico Rp0.1 of 190 MPa | min. | |
300.0 °C | 187 MPa Show Supplier Material materials with Límite elástico Rp0.1 of 187 MPa | min. | |
350.0 °C | 184 MPa Show Supplier Material materials with Límite elástico Rp0.1 of 184 MPa | min. | |
400.0 °C | 182 MPa Show Supplier Material materials with Límite elástico Rp0.1 of 182 MPa | min. | |
450.0 °C | 179 MPa Show Supplier Material materials with Límite elástico Rp0.1 of 179 MPa | min. | |
500.0 °C | 178 MPa Show Supplier Material materials with Límite elástico Rp0.1 of 178 MPa | min. | |
550.0 °C | 175 MPa Show Supplier Material materials with Límite elástico Rp0.1 of 175 MPa | min. | |
600.0 °C | 170 MPa Show Supplier Material materials with Límite elástico Rp0.1 of 170 MPa | min. | |
650.0 °C | 165 MPa Show Supplier Material materials with Límite elástico Rp0.1 of 165 MPa | min. | |
700.0 °C | 159 MPa Show Supplier Material materials with Límite elástico Rp0.1 of 159 MPa | min. | |
Módulo elástico | 20.0 °C | 192 GPa Show Supplier Material materials with Módulo elástico of 192 GPa | |
100.0 °C | 184 GPa Show Supplier Material materials with Módulo elástico of 184 GPa | ||
200.0 °C | 176 GPa Show Supplier Material materials with Módulo elástico of 176 GPa | ||
300.0 °C | 168 GPa Show Supplier Material materials with Módulo elástico of 168 GPa | ||
400.0 °C | 160 GPa Show Supplier Material materials with Módulo elástico of 160 GPa | ||
500.0 °C | 151 GPa Show Supplier Material materials with Módulo elástico of 151 GPa | ||
600.0 °C | 143 GPa Show Supplier Material materials with Módulo elástico of 143 GPa | ||
700.0 °C | 135 GPa Show Supplier Material materials with Módulo elástico of 135 GPa | ||
800.0 °C | 127 GPa Show Supplier Material materials with Módulo elástico of 127 GPa | ||
900.0 °C | 120 GPa Show Supplier Material materials with Módulo elástico of 120 GPa | ||
Resistencia a la tracción | 23.0 °C | 540 - 740 MPa Show Supplier Material materials with Resistencia a la tracción of 540 - 740 MPa | |
Aplicaciones térmicas
| Property | Temperature | Value | Comment |
|---|---|---|---|
Calor específico | 100.0 °C | 505 J/(kg·K) Show Supplier Material materials with Calor específico of 505 J/(kg·K) | for 20°C to the mentioned temperature |
200.0 °C | 530 J/(kg·K) Show Supplier Material materials with Calor específico of 530 J/(kg·K) | for 20°C to the mentioned temperature | |
300.0 °C | 540 J/(kg·K) Show Supplier Material materials with Calor específico of 540 J/(kg·K) | for 20°C to the mentioned temperature | |
400.0 °C | 545 J/(kg·K) Show Supplier Material materials with Calor específico of 545 J/(kg·K) | for 20°C to the mentioned temperature | |
500.0 °C | 555 J/(kg·K) Show Supplier Material materials with Calor específico of 555 J/(kg·K) | for 20°C to the mentioned temperature | |
600.0 °C | 560 J/(kg·K) Show Supplier Material materials with Calor específico of 560 J/(kg·K) | for 20°C to the mentioned temperature | |
700.0 °C | 565 J/(kg·K) Show Supplier Material materials with Calor específico of 565 J/(kg·K) | for 20°C to the mentioned temperature | |
800.0 °C | 575 J/(kg·K) Show Supplier Material materials with Calor específico of 575 J/(kg·K) | for 20°C to the mentioned temperature | |
900.0 °C | 580 J/(kg·K) Show Supplier Material materials with Calor específico of 580 J/(kg·K) | for 20°C to the mentioned temperature | |
1000.0 °C | 585 J/(kg·K) Show Supplier Material materials with Calor específico of 585 J/(kg·K) | for 20°C to the mentioned temperature | |
Coeficiente de dilatación térmica | 100.0 °C | 1.5E-5 1/K Show Supplier Material materials with Coeficiente de dilatación térmica of 1.5E-5 1/K | for 30°C to the mentioned temperature |
200.0 °C | 1.6E-5 1/K Show Supplier Material materials with Coeficiente de dilatación térmica of 1.6E-5 1/K | for 30°C to the mentioned temperature | |
300.0 °C | 1.7E-5 1/K Show Supplier Material materials with Coeficiente de dilatación térmica of 1.7E-5 1/K | for 30°C to the mentioned temperature | |
400.0 °C | 1.8E-5 1/K Show Supplier Material materials with Coeficiente de dilatación térmica of 1.8E-5 1/K | for 30°C to the mentioned temperature | |
500.0 °C | 1.85E-5 1/K Show Supplier Material materials with Coeficiente de dilatación térmica of 1.85E-5 1/K | for 30°C to the mentioned temperature | |
600.0 °C | 1.9E-5 1/K Show Supplier Material materials with Coeficiente de dilatación térmica of 1.9E-5 1/K | for 30°C to the mentioned temperature | |
700.0 °C | 1.9E-5 1/K Show Supplier Material materials with Coeficiente de dilatación térmica of 1.9E-5 1/K | for 30°C to the mentioned temperature | |
800.0 °C | 1.95E-5 1/K Show Supplier Material materials with Coeficiente de dilatación térmica of 1.95E-5 1/K | for 30°C to the mentioned temperature | |
900.0 °C | 2E-5 1/K Show Supplier Material materials with Coeficiente de dilatación térmica of 2E-5 1/K | for 30°C to the mentioned temperature | |
Conductividad térmica | 20.0 °C | 13 W/(m·K) Show Supplier Material materials with Conductividad térmica of 13 W/(m·K) | |
100.0 °C | 14 W/(m·K) Show Supplier Material materials with Conductividad térmica of 14 W/(m·K) | ||
200.0 °C | 15 W/(m·K) Show Supplier Material materials with Conductividad térmica of 15 W/(m·K) | ||
300.0 °C | 17 W/(m·K) Show Supplier Material materials with Conductividad térmica of 17 W/(m·K) | ||
400.0 °C | 19 W/(m·K) Show Supplier Material materials with Conductividad térmica of 19 W/(m·K) | ||
500.0 °C | 20 W/(m·K) Show Supplier Material materials with Conductividad térmica of 20 W/(m·K) | ||
600.0 °C | 22 W/(m·K) Show Supplier Material materials with Conductividad térmica of 22 W/(m·K) | ||
700.0 °C | 23 W/(m·K) Show Supplier Material materials with Conductividad térmica of 23 W/(m·K) | ||
800.0 °C | 24 W/(m·K) Show Supplier Material materials with Conductividad térmica of 24 W/(m·K) | ||
Eléctrico
| Property | Temperature | Value |
|---|---|---|
Resistividad eléctrica | 20.0 °C | 7.4E-7 Ω·m Show Supplier Material materials with Resistividad eléctrica of 7.4E-7 Ω·m |
100.0 °C | 8E-7 Ω·m Show Supplier Material materials with Resistividad eléctrica of 8E-7 Ω·m | |
200.0 °C | 8.8E-7 Ω·m Show Supplier Material materials with Resistividad eléctrica of 8.8E-7 Ω·m | |
300.0 °C | 9.4E-7 Ω·m Show Supplier Material materials with Resistividad eléctrica of 9.4E-7 Ω·m | |
400.0 °C | 1E-6 Ω·m Show Supplier Material materials with Resistividad eléctrica of 1E-6 Ω·m | |
500.0 °C | 1.05E-6 Ω·m Show Supplier Material materials with Resistividad eléctrica of 1.05E-6 Ω·m | |
600.0 °C | 1.09E-6 Ω·m Show Supplier Material materials with Resistividad eléctrica of 1.09E-6 Ω·m | |
700.0 °C | 1.13E-6 Ω·m Show Supplier Material materials with Resistividad eléctrica of 1.13E-6 Ω·m | |
800.0 °C | 1.16E-6 Ω·m Show Supplier Material materials with Resistividad eléctrica of 1.16E-6 Ω·m | |
900.0 °C | 1.18E-6 Ω·m Show Supplier Material materials with Resistividad eléctrica of 1.18E-6 Ω·m | |
1000.0 °C | 1.2E-6 Ω·m Show Supplier Material materials with Resistividad eléctrica of 1.2E-6 Ω·m | |
Chemical properties
| Property | Value | Comment | |
|---|---|---|---|
Azufre | 0.015 % Show Supplier Material materials with Azufre of 0.015 % | max. | |
Boro | 5E-3 % Show Supplier Material materials with Boro of 5E-3 % | ||
Carbono | 0.1 % Show Supplier Material materials with Carbono of 0.1 % | ||
Cromo | 15 % Show Supplier Material materials with Cromo of 15 % | ||
Fósforo | 0.04 % Show Supplier Material materials with Fósforo of 0.04 % | max. | |
Hierro | Balance | ||
Manganeso | 6.3 % Show Supplier Material materials with Manganeso of 6.3 % | ||
Molibdeno | 1 % Show Supplier Material materials with Molibdeno of 1 % | ||
Niobio | 1 % Show Supplier Material materials with Niobio of 1 % | ||
Níquel | 9.5 % Show Supplier Material materials with Níquel of 9.5 % | ||
Silicona | 0.5 % Show Supplier Material materials with Silicona of 0.5 % | ||
Vanadio | 0.3 % Show Supplier Material materials with Vanadio of 0.3 % | ||
Technological properties
| Property | ||
|---|---|---|
| Application areas | The high creep strength of Esshete 1250, combined with its good resistance to steam and flue gas atmospheres, makes it a very suitable material for use in coal-fired boilers. The grade was developed in the United Kingdom in the 1960's, and the bulk of the material has been used in the UK power industry in 500 and 660 MW boilers. The main application has been superheaters and reheaters operating at 570°C (1058°F), steam pressure 170 bar (superheaters) and 40 bar (reheaters). Typical metal temperature 600–700°C (1112–1292°F), in flue gas temperature 900–1200°C (1652–2192°F). The corrosion environment on the fireside in the UK boilers was historically very aggressive as the British coal has, typically a high chlorine content of up to 0.6%, sulphur at 1–2% and a high ash content of 20%. Esshete 1250 has also been used successfully in superheaters in biomass boilers, burning various biofuels and producing steam at 580–540°C (1076–1004°F) at 60–200 bars pressure. Trademark information: Esshete 1250 is a trademark owned by Corus | |
| Certifications | Approvals: VdTÜV-Werkstoffblatt 520 and PED (Pressure Equipment Directive) 2014/68/EU | |
| Cold Forming | Esshete 1250 can be cold bent to narrow bending radii. Heat treatment after cold bending is not normally necessary, but this must be decided after considering the degree of bending and the operating conditions. If post bending heat treatment is carried out, it should be in the form of solution annealing. | |
| Corrosion properties | Air: Good resistance to scaling up to 800°C (1472°F). Gaseous corrosion: Good resistance to steam and flue gas atmospheres. In service conditions typical of coal-fired boilers, the alloy has a very similar fireside corrosion to alloys of the ASTM 316H type. However, the much increased high-temperature strength gives significantly improved service performance. Fireside corrosion resistance in coal-fired, biomass-fired or coal/biomass co-fired boilers is similar to that of type ASTM 347H. Steam-side corrosion is similar to that of type ASTM 347H. | |
| Heat Treatment | Tubes are delivered in the heat treated condition. If another heat treatment is needed after further processing the following is recommended: Stress relieving: 850–950°C (1560–1740°F), 10–15 minutes, cooling in air. Solution annealing: 1050–1150°C (1920–2100°F), 5–20 minutes, rapid cooling in air, gas or water. | |
| Hot forming | Hot bending is carried out at 1100–850°C (1832–1652°F) and should be followed by solution annealing. | |
| Other | Forms of supply: Seamless tube and pipe in Esshete 1250 is supplied in dimensions up to 260 mm (10.24 in.) outside diameter, in the solution annealed and white-pickled condition or in the bright annealed condition. | |
| Structural Stability | As in other austenitic stainless steels, sigma phase can be formed after long heat treatment in the range 550–950°C (1022–1742oF). Due to the low chromium content, Esshete 1250 is significantly less sensitive to sigma phase formation than steels of e.g. the ASTM 316 type, according to tests involving ageing for 100000 h. | |
| Welding | The weldability of Esshete 1250 is good. Welding must be carried out without preheating and subsequent heat treatment is normally not required. Suitable methods of fusion welding are manual metal-arc welding (MMA/SMAW) and gas-shielded arc welding, with the TIG/GTAW method as first choice. For Esshete 1250, heat input of <1.5 kJ/mm and interpass temperature of <150°C (300°F) are recommended. Recommended filler metals:
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