DIN 17744 Grade NiCr21Mo soft annealed (+A)

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Description

According to the VdTÜV-Werkstoffblatt editions VdTÜV-Wbl 432-1 : 1999-06 (sheet metal, strip metal), VdTÜV-Wbl 432-2 : 1999-03 (seamless tube) and VdTÜV-Wbl 432-3 : 1999-06 (bar steel, forging) as well as VdTÜV 541 : 2001-06 (seamless compound pipes, coating material), the material NiCr21Mo with the material number 2.4858 is used for pressure vessels according to TRB 100 and, with interpreting the AD-Merkblatt W 2 faithfully to its meaning, for temperatures from -10 to 450 degrees. The highly corrosion-resistant nickel alloy is used in the nuclear engineering as far as the rules of nuclear engineering or the object-related specifications permit the use of - 10 to 450 °C. With observance of the generally acknowledged rules of technology, the suitability for welding of the nickel alloy is approved for metal-arc welding and gas-shielded arc welding (short arc). A heat treatment is not necessary, a preheating - except for the removal of condensed moisture - ought to be omitted. The maximum holding temperature is 200 °C. The material is cold- and hot-formable and, in accordance with DIN 50914, it is resistant to intercrystalline corrosion in the welded condition, too. The maximum eroding rate in the Huey-test is 0,6 mm/year (mean value of the 5 testing periods) in the as-delivered condition. The following is valid for the material according to DIN 17744 : 2002-09: the nickel alloy is applied in the form of strips, sheets, tubes, bars, wires and forgings for corrosion-resistant construction components. The alloy possesses very good resistance to reducing as well as to oxidizing acids, to stress cracking corrosion as well as to pitting and crevice corrosion. It has proven outstandingly worthwile in solutions of sulphuric and phosphoric acid. Applications for the chemical manufacturing technology, for plants for the prevention of air pollution, for tubes for the extraction of oil and gas, for the recycling of nuclear fuel assemblies, for the acid production for cellulose digesters in the paper industry as well as for pickling facilities. Processing properties: Formability: good Weldability: good (Werkstoffblatt/Wbl: material specification Merkblatt: specification sheet)

Related Standards

Equivalent Materials

This material data has been provided by WIAM.

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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Properties

General

PropertyTemperatureValue

Density

20.0 °C

8.05 - 8.1 g/cm³

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Mechanical

PropertyTemperatureValue

Elastic modulus

20.0 °C

195 GPa

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100.0 °C

190 GPa

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200.0 °C

185 GPa

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300.0 °C

179 GPa

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400.0 °C

174 GPa

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500.0 °C

168 GPa

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600.0 °C

161 GPa

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700.0 °C

154 GPa

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800.0 °C

142 GPa

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900.0 °C

130 GPa

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1000.0 °C

119 GPa

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Elongation

20.0 °C

30 - 35 %

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Elongation A100

20.0 °C

20 - 30 %

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Elongation, transverse

20.0 °C

30 %

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Hardness, Brinell

20.0 °C

190 - 210 [-]

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Tensile strength

20.0 °C

500 - 750 MPa

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100.0 °C

520 - 530 MPa

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200.0 °C

490 - 515 MPa

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300.0 °C

480 - 500 MPa

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400.0 °C

470 - 490 MPa

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450.0 °C

465 - 485 MPa

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Tensile strength, transverse

20.0 °C

550 - 750 MPa

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Yield strength Rp0.2

20.0 °C

220 - 240 MPa

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100.0 °C

190 - 205 MPa

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150.0 °C

175 - 190 MPa

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200.0 °C

165 - 180 MPa

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250.0 °C

160 - 175 MPa

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300.0 °C

155 - 170 MPa

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350.0 °C

150 - 165 MPa

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400.0 °C

145 - 160 MPa

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450.0 °C

140 - 155 MPa

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Yield strength Rp0.2, transverse

20.0 °C

220 - 235 MPa

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Yield strength Rp1.0

20.0 °C

250 - 270 MPa

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100.0 °C

220 - 235 MPa

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150.0 °C

205 - 220 MPa

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200.0 °C

190 - 205 MPa

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250.0 °C

185 - 200 MPa

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300.0 °C

180 - 195 MPa

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350.0 °C

175 - 190 MPa

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400.0 °C

170 - 185 MPa

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450.0 °C

165 - 180 MPa

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Yield strength Rp1.0, transverse

20.0 °C

250 - 265 MPa

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Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

100.0 °C

1.41E-5 1/K

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200.0 °C

1.49E-5 1/K

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300.0 °C

1.52E-5 1/K

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400.0 °C

1.56E-5 1/K

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500.0 °C

1.58E-5 1/K

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600.0 °C

1.6E-5 1/K

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700.0 °C

1.67E-5 1/K

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800.0 °C

1.72E-5 1/K

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900.0 °C

1.76E-5 1/K

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1000.0 °C

1.79E-5 1/K

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Max service temperature, long

-10 - 450 °C

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Melting point

1200 - 1480 °C

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Typical for Nickel Chromium Iron Alloy

Specific heat capacity

20.0 °C

440 J/(kg·K)

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100.0 °C

462 J/(kg·K)

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200.0 °C

488 J/(kg·K)

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300.0 °C

514 J/(kg·K)

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400.0 °C

540 J/(kg·K)

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500.0 °C

565 J/(kg·K)

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600.0 °C

590 J/(kg·K)

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700.0 °C

615 J/(kg·K)

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800.0 °C

655 J/(kg·K)

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900.0 °C

680 J/(kg·K)

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1000.0 °C

710 J/(kg·K)

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Thermal conductivity

20.0 °C

10.8 W/(m·K)

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100.0 °C

12.4 W/(m·K)

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200.0 °C

14.1 W/(m·K)

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300.0 °C

15.6 W/(m·K)

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400.0 °C

16.9 W/(m·K)

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500.0 °C

18.3 W/(m·K)

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600.0 °C

19.6 W/(m·K)

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700.0 °C

21 W/(m·K)

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800.0 °C

23.2 W/(m·K)

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900.0 °C

25.7 W/(m·K)

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1000.0 °C

28.1 W/(m·K)

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Electrical

PropertyTemperatureValue

Electrical resistivity

20.0 °C

1.12E-6 Ω·m

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100.0 °C

1.14E-6 Ω·m

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200.0 °C

1.18E-6 Ω·m

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300.0 °C

1.2E-6 Ω·m

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400.0 °C

1.24E-6 Ω·m

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500.0 °C

1.26E-6 Ω·m

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600.0 °C

1.26E-6 Ω·m

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700.0 °C

1.27E-6 Ω·m

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800.0 °C

1.28E-6 Ω·m

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900.0 °C

1.29E-6 Ω·m

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1000.0 °C

1.3E-6 Ω·m

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Chemical properties

PropertyValue

Aluminium

0.2 %

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Carbon

0.025 %

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Chromium

19.5 - 23.5 %

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Cobalt

1 %

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Copper

1.5 - 3 %

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Iron

20.04 %

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Manganese

1 %

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Molybdenum

2.5 - 3.5 %

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Nickel

38 - 46 %

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Phosphorus

0.02 %

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Silicon

0.5 %

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Sulfur

0.01 - 0.015 %

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Titanium

0.6 - 1.2 %

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