ASTM A203 Grade A Nickel Steel
Alloy Steels
Property Overview
Density7.9g/cm³
Elastic Modulus190GPa
Tensile Strength520MPa
Yield Strength290MPa
Brinell Hardness160HB
Maximum Service Temperature410°C
Chemical Composition
C
0 to 0.23%
NI
2.0 to 2.6%
MN
0 to 0.88%
SI
0.13 to 0.45%
P
0 to 0.035%
S
0 to 0.035%
FE
95.8 to 97.8%
Mechanical
Elastic (Young's, Tensile) Modulus
190 GPa
Elongation at Break
26 %
Fatigue Strength
210 MPa
Poisson's Ratio
0.29
Shear Modulus
73 GPa
Shear Strength
330 MPa
Tensile Strength: Ultimate (UTS)
520 MPa
Tensile Strength: Yield (Proof)
290 MPa
Hardness
Brinell Hardness
160
Physical
Density
7.9 g/cm 3
Thermal
Latent Heat of Fusion
250 J/g
Maximum Temperature: Mechanical
410 °C
Melting Completion (Liquidus)
1460 °C
Melting Onset (Solidus)
1420 °C
Specific Heat Capacity
470 J/kg-K
Thermal Conductivity
52 W/m-K
Thermal Diffusivity
14 mm 2 /s
Thermal Expansion
13 µm/m-K
Thermal Shock Resistance
15 points
Electrical
Electrical Conductivity: Equal Volume
7.4 % IACS
Electrical Conductivity: Equal Weight (Specific)
8.5 % IACS
Calculated
Resilience: Ultimate (Unit Rupture Work)
110 MJ/m 3
Resilience: Unit (Modulus of Resilience)
230 kJ/m 3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
24 points
Strength to Weight: Axial
18 points
Strength to Weight: Bending
18 points
Environmental
Base Metal Price
3.2 % relative
Embodied Carbon
1.6 kg CO 2 /kg material
Embodied Energy
21 MJ/kg
Embodied Energy
21 MJ/kg 9.1 x 10 3 BTU/lb
Embodied Water
50 L/kg
Embodied Water
50 L/kg 5.9 gal/lb
Registered Designations & Aliases
ASTM A203 Grade A Nickel Steel
Standards
ASTM A203 ASTM A203: Standard Specification for Pressure Vessel Plates, Alloy Steel, Nickel
ASTM A203 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