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ASTM A203 Nickel Steel

ASTM A203 steel is an alloy steel formulated for primary forming into wrought products. It has a fairly high thermal conductivity among the wrought alloy steels in the same category in the database.

The properties of ASTM A203 steel include five common variations. This page shows summary ranges across all of them. For more specific values, follow the links immediately below. The graph bars on the material properties cards further below compare ASTM A203 steel to: wrought alloy steels in the same category (top), all iron alloys (middle), and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.

Mechanical Properties

Brinell Hardness

160 to 180

Elastic (Young's, Tensile) Modulus

190 GPa 27 x 106 psi

Elongation at Break

22 to 26 %

Fatigue Strength

210 to 280 MPa 31 to 40 x 103 psi

Poisson's Ratio

0.29

Shear Modulus

73 GPa 11 x 106 psi

Shear Strength

330 to 370 MPa 48 to 54 x 103 psi

Tensile Strength: Ultimate (UTS)

520 to 590 MPa 75 to 85 x 103 psi

Tensile Strength: Yield (Proof)

290 to 390 MPa 42 to 57 x 103 psi

Thermal Properties

Latent Heat of Fusion

250 J/g

Maximum Temperature: Mechanical

410 °C 760 to 770 °F

Melting Completion (Liquidus)

1460 °C 2660 °F

Melting Onset (Solidus)

1420 °C 2580 to 2590 °F

Specific Heat Capacity

470 J/kg-K 0.11 BTU/lb-°F

Thermal Conductivity

52 W/m-K 30 BTU/h-ft-°F

Thermal Expansion

13 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

7.4 to 7.6 % IACS

Electrical Conductivity: Equal Weight (Specific)

8.5 to 8.7 % IACS

Otherwise Unclassified Properties

Base Metal Price

3.2 to 4.0 % relative

Density

7.9 g/cm3 490 lb/ft3

Embodied Carbon

1.6 to 1.7 kg CO2/kg material

Embodied Energy

21 to 23 MJ/kg 9.1 to 9.8 x 103 BTU/lb

Embodied Water

50 to 52 L/kg 5.9 to 6.2 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

110 to 120 MJ/m3

Resilience: Unit (Modulus of Resilience)

230 to 410 kJ/m3

Stiffness to Weight: Axial

13 points

Stiffness to Weight: Bending

24 points

Strength to Weight: Axial

18 to 21 points

Strength to Weight: Bending

18 to 20 points

Thermal Diffusivity

14 m2/s

Thermal Shock Resistance

15 to 17 points

Followup Questions

Further Reading

ASTM A203: Standard Specification for Pressure Vessel Plates, Alloy Steel, Nickel

Pressure Vessels: External Pressure Technology, 2nd ed., Carl T. F. Ross, 2011

Manufacture and Uses of Alloy Steels, Henry D. Hibbard, 2005

Ferrous Materials: Steel and Cast Iron, Hans Berns and Werner Theisen, 2008

Steels: Processing, Structure, and Performance, 2nd ed., George Krauss, 2015