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Sandvik 7RE10

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Description

Sandvik 7RE10 is an austenitic, stainless chromium-nickel steel of the 25/20 type, suitable for high-temperature applications. The grade is characterized by:

Good resistance to carburization, sulphidation, and oxidation combined with moderate creep strength and structural stability.

A maximum service temperature in air of 1100°C (2010°F).

Datasheet URL:

Sandvik 7RE10

Datasheet updated 2020-04-23 11:17 (supersedes all previous editions)

Related Standards

Equivalent Materials

This material data has been provided by Sandvik Materials Technology.

"Typical" values were obtained via a literature search. "Predicted" values were imputed via artificial intelligence technology. While we have placed significant efforts in ensuring data accuracy, "typical" and "predicted" data should be considered indicative and verified by appropriate material testing. Please do contact us if additional information on the the predicted data method is required.
All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.

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ALLEIMA (FORMERLY SANDVIK MATERIALS TECHNOLOGY)

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Additional services:

To ensure our customers' processes and/or products attain – and even exceed – their performance expectations, we offer a wide range of services within both the technical area and delivery logistics. Our technical services include: • Material consultations through our worldwide sales network • Advice in process optimization based on an in-depth applications knowledge • Joint new product development supported by our extensive R&D program View product groups and services

Applications

Manufacturing

Industrial Furnaces

Furnace Parts

Heat Treatment

Energy

Burners & Boilers

Boilers & Heat Exchangers

Electrical Engineering

Electrical Accessories

Thermocouple

Chemical Industry

Equipment For Chemical Industry

Heat Exchangers

Metallurgy

Iron & Steel Products

Steel Pipes & Tubes

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Properties

General

Property	Temperature	Value	Comment
Density	23.0 °C	7.9 g/cm³ Show Supplier Material materials with Density of 7.9 g/cm³
Recycled Content		82.1 % Show Supplier Material materials with Recycled Content of 82.1 %	Average recycled content

Mechanical

Property	Temperature	Value	Comment
Creep strength 10^4 cycles	525.0 °C	155 MPa Show Supplier Material materials with Creep strength 10^4 cycles of 155 MPa	at 10000h, average values
	550.0 °C	133 MPa Show Supplier Material materials with Creep strength 10^4 cycles of 133 MPa	at 10000h, average values
	575.0 °C	113 MPa Show Supplier Material materials with Creep strength 10^4 cycles of 113 MPa	at 10000h, average values
	600.0 °C	96 MPa Show Supplier Material materials with Creep strength 10^4 cycles of 96 MPa	at 10000h, average values
	625.0 °C	81 MPa Show Supplier Material materials with Creep strength 10^4 cycles of 81 MPa	at 10000h, average values
	650.0 °C	68 MPa Show Supplier Material materials with Creep strength 10^4 cycles of 68 MPa	at 10000h, average values
	675.0 °C	55 MPa Show Supplier Material materials with Creep strength 10^4 cycles of 55 MPa	at 10000h, average values
	700.0 °C	44 MPa Show Supplier Material materials with Creep strength 10^4 cycles of 44 MPa	at 10000h, average values
	725.0 °C	36 MPa Show Supplier Material materials with Creep strength 10^4 cycles of 36 MPa	at 10000h, average values
	750.0 °C	30 MPa Show Supplier Material materials with Creep strength 10^4 cycles of 30 MPa	at 10000h, average values
	775.0 °C	25 MPa Show Supplier Material materials with Creep strength 10^4 cycles of 25 MPa	at 10000h, average values
	800.0 °C	21 MPa Show Supplier Material materials with Creep strength 10^4 cycles of 21 MPa	at 10000h, average values
	825.0 °C	18 MPa Show Supplier Material materials with Creep strength 10^4 cycles of 18 MPa	at 10000h, average values
	850.0 °C	15 MPa Show Supplier Material materials with Creep strength 10^4 cycles of 15 MPa	at 10000h, average values
	875.0 °C	12 MPa Show Supplier Material materials with Creep strength 10^4 cycles of 12 MPa	at 10000h, average values
	900.0 °C	10 MPa Show Supplier Material materials with Creep strength 10^4 cycles of 10 MPa	at 10000h, average values
	925.0 °C	8 MPa Show Supplier Material materials with Creep strength 10^4 cycles of 8 MPa	at 10000h, average values
	950.0 °C	6 MPa Show Supplier Material materials with Creep strength 10^4 cycles of 6 MPa	at 10000h, average values

Creep strength 10^5 cycles	525.0 °C	105 - 155 MPa Show Supplier Material materials with Creep strength 10^5 cycles of 105 - 155 MPa	at 100000h, average values
	550.0 °C	85 MPa Show Supplier Material materials with Creep strength 10^5 cycles of 85 MPa	at 100000h, average values
	575.0 °C	68 MPa Show Supplier Material materials with Creep strength 10^5 cycles of 68 MPa	at 100000h, average values
	600.0 °C	56 MPa Show Supplier Material materials with Creep strength 10^5 cycles of 56 MPa	at 100000h, average values
	625.0 °C	45 MPa Show Supplier Material materials with Creep strength 10^5 cycles of 45 MPa	at 100000h, average values
	650.0 °C	36 MPa Show Supplier Material materials with Creep strength 10^5 cycles of 36 MPa	at 100000h, average values
	675.0 °C	29 MPa Show Supplier Material materials with Creep strength 10^5 cycles of 29 MPa	at 100000h, average values
	700.0 °C	24 MPa Show Supplier Material materials with Creep strength 10^5 cycles of 24 MPa	at 100000h, average values
	725.0 °C	20 MPa Show Supplier Material materials with Creep strength 10^5 cycles of 20 MPa	at 100000h, average values
	750.0 °C	17 MPa Show Supplier Material materials with Creep strength 10^5 cycles of 17 MPa	at 100000h, average values
	775.0 °C	14 MPa Show Supplier Material materials with Creep strength 10^5 cycles of 14 MPa	at 100000h, average values
	800.0 °C	11 MPa Show Supplier Material materials with Creep strength 10^5 cycles of 11 MPa	at 100000h, average values
	825.0 °C	9 MPa Show Supplier Material materials with Creep strength 10^5 cycles of 9 MPa	at 100000h, average values
	850.0 °C	7 MPa Show Supplier Material materials with Creep strength 10^5 cycles of 7 MPa	at 100000h, average values
	875.0 °C	5 MPa Show Supplier Material materials with Creep strength 10^5 cycles of 5 MPa	at 100000h, average values
	900.0 °C	4 MPa Show Supplier Material materials with Creep strength 10^5 cycles of 4 MPa	at 100000h, average values
	925.0 °C	4 MPa Show Supplier Material materials with Creep strength 10^5 cycles of 4 MPa	at 100000h, average values
	950.0 °C	3 MPa Show Supplier Material materials with Creep strength 10^5 cycles of 3 MPa	at 100000h, average values
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Elastic modulus	20.0 °C	195 GPa Show Supplier Material materials with Elastic modulus of 195 GPa
	100.0 °C	190 GPa Show Supplier Material materials with Elastic modulus of 190 GPa
	200.0 °C	182 GPa Show Supplier Material materials with Elastic modulus of 182 GPa
	300.0 °C	174 GPa Show Supplier Material materials with Elastic modulus of 174 GPa
	400.0 °C	166 GPa Show Supplier Material materials with Elastic modulus of 166 GPa
	500.0 °C	158 GPa Show Supplier Material materials with Elastic modulus of 158 GPa
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Elongation	23.0 °C	35 % Show Supplier Material materials with Elongation of 35 %	min.
Elongation A2	23.0 °C	35 % Show Supplier Material materials with Elongation A2 of 35 %	min.
Hardness, Rockwell B	23.0 °C	90 [-] Show Supplier Material materials with Hardness, Rockwell B of 90 [-]	max.
Tensile strength	23.0 °C	530 - 750 MPa Show Supplier Material materials with Tensile strength of 530 - 750 MPa
Yield strength Rp0.1	20.0 °C	250 MPa Show Supplier Material materials with Yield strength Rp0.1 of 250 MPa	min.
	50.0 °C	238 MPa Show Supplier Material materials with Yield strength Rp0.1 of 238 MPa	min.
	100.0 °C	217 MPa Show Supplier Material materials with Yield strength Rp0.1 of 217 MPa	min.
	150.0 °C	201 MPa Show Supplier Material materials with Yield strength Rp0.1 of 201 MPa	min.
	200.0 °C	186 MPa Show Supplier Material materials with Yield strength Rp0.1 of 186 MPa	min.
	250.0 °C	175 MPa Show Supplier Material materials with Yield strength Rp0.1 of 175 MPa	min.
	300.0 °C	166 MPa Show Supplier Material materials with Yield strength Rp0.1 of 166 MPa	min.
	350.0 °C	159 MPa Show Supplier Material materials with Yield strength Rp0.1 of 159 MPa	min.
	400.0 °C	154 MPa Show Supplier Material materials with Yield strength Rp0.1 of 154 MPa	min.
	450.0 °C	150 MPa Show Supplier Material materials with Yield strength Rp0.1 of 150 MPa	min.
	500.0 °C	148 MPa Show Supplier Material materials with Yield strength Rp0.1 of 148 MPa	min.
	550.0 °C	146 MPa Show Supplier Material materials with Yield strength Rp0.1 of 146 MPa	min.
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Yield strength Rp0.2	20.0 °C	220 MPa Show Supplier Material materials with Yield strength Rp0.2 of 220 MPa	min.
	50.0 °C	213 MPa Show Supplier Material materials with Yield strength Rp0.2 of 213 MPa	min.
	100.0 °C	192 MPa Show Supplier Material materials with Yield strength Rp0.2 of 192 MPa	min.
	150.0 °C	176 MPa Show Supplier Material materials with Yield strength Rp0.2 of 176 MPa	min.
	200.0 °C	161 MPa Show Supplier Material materials with Yield strength Rp0.2 of 161 MPa	min.
	250.0 °C	150 MPa Show Supplier Material materials with Yield strength Rp0.2 of 150 MPa	min.
	300.0 °C	141 MPa Show Supplier Material materials with Yield strength Rp0.2 of 141 MPa	min.
	350.0 °C	134 MPa Show Supplier Material materials with Yield strength Rp0.2 of 134 MPa	min.
	400.0 °C	129 MPa Show Supplier Material materials with Yield strength Rp0.2 of 129 MPa	min.
	450.0 °C	125 MPa Show Supplier Material materials with Yield strength Rp0.2 of 125 MPa	min.
	500.0 °C	123 MPa Show Supplier Material materials with Yield strength Rp0.2 of 123 MPa	min.
	550.0 °C	121 MPa Show Supplier Material materials with Yield strength Rp0.2 of 121 MPa	min.
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Thermal

Property	Temperature	Value	Comment
Coefficient of thermal expansion	100.0 °C	1.55E-5 1/K Show Supplier Material materials with Coefficient of thermal expansion of 1.55E-5 1/K	for 20°C to the mentioned temperature
	200.0 °C	1.5E-5 1/K Show Supplier Material materials with Coefficient of thermal expansion of 1.5E-5 1/K	for 20°C to the mentioned temperature
	300.0 °C	1.55E-5 1/K Show Supplier Material materials with Coefficient of thermal expansion of 1.55E-5 1/K	for 20°C to the mentioned temperature
	400.0 °C	1.6E-5 1/K Show Supplier Material materials with Coefficient of thermal expansion of 1.6E-5 1/K	for 20°C to the mentioned temperature
	500.0 °C	1.65E-5 1/K Show Supplier Material materials with Coefficient of thermal expansion of 1.65E-5 1/K	for 20°C to the mentioned temperature
	600.0 °C	1.7E-5 1/K Show Supplier Material materials with Coefficient of thermal expansion of 1.7E-5 1/K	for 20°C to the mentioned temperature
	700.0 °C	1.75E-5 1/K Show Supplier Material materials with Coefficient of thermal expansion of 1.75E-5 1/K	for 20°C to the mentioned temperature
	800.0 °C	1.85E-5 1/K Show Supplier Material materials with Coefficient of thermal expansion of 1.85E-5 1/K	for 20°C to the mentioned temperature
	900.0 °C	1.9E-5 1/K Show Supplier Material materials with Coefficient of thermal expansion of 1.9E-5 1/K	for 20°C to the mentioned temperature
	1000.0 °C	1.9E-5 1/K Show Supplier Material materials with Coefficient of thermal expansion of 1.9E-5 1/K	for 20°C to the mentioned temperature
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Specific heat capacity	20.0 °C	470 J/(kg·K) Show Supplier Material materials with Specific heat capacity of 470 J/(kg·K)
	100.0 °C	495 J/(kg·K) Show Supplier Material materials with Specific heat capacity of 495 J/(kg·K)
	200.0 °C	530 J/(kg·K) Show Supplier Material materials with Specific heat capacity of 530 J/(kg·K)
	300.0 °C	555 J/(kg·K) Show Supplier Material materials with Specific heat capacity of 555 J/(kg·K)
	400.0 °C	580 J/(kg·K) Show Supplier Material materials with Specific heat capacity of 580 J/(kg·K)
	500.0 °C	600 J/(kg·K) Show Supplier Material materials with Specific heat capacity of 600 J/(kg·K)
	600.0 °C	615 J/(kg·K) Show Supplier Material materials with Specific heat capacity of 615 J/(kg·K)
	700.0 °C	630 J/(kg·K) Show Supplier Material materials with Specific heat capacity of 630 J/(kg·K)
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Thermal conductivity	20.0 °C	13 W/(m·K) Show Supplier Material materials with Thermal conductivity of 13 W/(m·K)
	100.0 °C	15 W/(m·K) Show Supplier Material materials with Thermal conductivity of 15 W/(m·K)
	200.0 °C	17 W/(m·K) Show Supplier Material materials with Thermal conductivity of 17 W/(m·K)
	300.0 °C	19 W/(m·K) Show Supplier Material materials with Thermal conductivity of 19 W/(m·K)
	400.0 °C	21 W/(m·K) Show Supplier Material materials with Thermal conductivity of 21 W/(m·K)
	500.0 °C	23 W/(m·K) Show Supplier Material materials with Thermal conductivity of 23 W/(m·K)
	600.0 °C	25 W/(m·K) Show Supplier Material materials with Thermal conductivity of 25 W/(m·K)
	700.0 °C	26 W/(m·K) Show Supplier Material materials with Thermal conductivity of 26 W/(m·K)
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Chemical properties

Property	Value	Comment
Carbon	0.06 % Show Supplier Material materials with Carbon of 0.06 %	max.
Chromium	24.5 % Show Supplier Material materials with Chromium of 24.5 %
Iron	Balance
Manganese	1.5 % Show Supplier Material materials with Manganese of 1.5 %	max.
Nickel	21 % Show Supplier Material materials with Nickel of 21 %
Phosphorus	0.03 % Show Supplier Material materials with Phosphorus of 0.03 %	max.
Silicon	0.75 % Show Supplier Material materials with Silicon of 0.75 %	max.
Sulfur	0.015 % Show Supplier Material materials with Sulfur of 0.015 %	max.

Technological properties

Property
Application areas	The good, general high temperature corrosion resistance of Sandvik 7RE10 makes it suitable for a wide range of applications: Furnace tubes Recuperators Muffle tubes in continuous wire annealing furnaces Thermocouple protection tubes Radiant tubes Tube hangers in petroleum and steam boilers Burners
Cold Forming	Annealing after cold bending is not normally necessary, but this should be reviewed depending on the degree of bending and the operating conditions. Heat treatment, if any, should take the form of stress relieving or solution annealing. See under "Heat treatment". Solution annealing is recommended for tubes used at temperatures above 750°C (1380°F), and when the highest possible creep strength is required in the bent tube.
Corrosion properties	Sandvik 7RE10 has very good resistance to oxidation and sulphidation. It can be used in: Air up to 1100°C (2010°F) Sulphur-containing atmospheres up to 650-1050°C (1200-1920°F), depending on service conditions. Factors to consider are whether the atmosphere is oxidizing or reducing and whether impurities such as sodium and vanadium are present The high chromium content of Sandvik 7RE10 makes the material resistant to oxidizing aqueous solutions. Sandvik 7RE10 also has better resistance to chloride induced stress corrosion cracking than lower alloyed steels of type ASTM 304 and 316. Sandvik 7RE10 has good resistance in cyanide melts and neutral salts melts at high temperature. The material is insensitive to "green rot" attack.
Heat Treatment	Tubes are generally delivered in the solution annealed 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. The temperature should not be allowed to fall below 850°C (1560°F), because of the risk of sensitization. Solution annealing: 1000-1150°C (1830-2100°F), 5-20 minutes, rapid cooling in air or water.
Hot forming	Hot bending is carried out at 1100-850°C (2010-1560°F) and should be followed by solution annealing.
Other	Forms of supply: Seamless tube and pipe in Sandvik 7RE10 is supplied in dimensions up to 260 mm outside diameter, in the solution annealed and white-pickled condition or in the bright annealed condition. Stock sizes: Sandvik 7RE10 is stocked in sizes ranging from 13.5 mm to 168.28 mm (6") outside diameter. Additional data concerning sizes and finishes is available on request from your nearest Sandvik office.
Structural Stability	Like other austenitic stainless steels, Sandvik 7RE10 has better structural stability than high alloyed ferritic steels. At temperatures between 800 and 900°C (1470-1650°F), however, the structural stability will be slightly impaired. For service in this temperature range, we recommend the use of Sanicro 31HT, which has better structural stability.
Welding	The weldability of Sandvik 7RE10 is good. 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. In common with all fully austenitic stainless steels, Sandvik 7RE10 has low thermal conductivity and high thermal expansion. Welding plans should therefore be carefully selected in advance, so that distortions of the welded joint are minimized. If residual stresses are a concern, solution annealing can be performed after welding. Welding of fully austenitic stainless steel can entail the risk of hot cracking in the welded joints, particularly under high constraint. For Sandvik 7RE10, heat-input of <1.0 kJ/mm and interpass temperature of <100°C (210°F) are recommended. A string bead welding technique should be used. Recommended filler metals: TIG/GTAW or MIG/GMAW welding ISO 14343 S 25 20 / AWS A5.9 ER310 (e.g. Exaton 25.20.C) MMA/SMAW welding ISO 3581 E 25 20 B / AWS A5.4 E310-15 (e.g. Exaton 25.20.B)