ASTM A225 Manganese-Vanadium-Nickel Steel
ASTM A225 steel is an alloy steel formulated for primary forming into wrought products. It has a fairly high thermal conductivity among wrought alloy steels in the same category. In addition, it has a fairly low base cost and can have a moderately high embodied energy.
The properties of ASTM A225 steel include two common variations. This page shows summary ranges across both of them. For more specific values, follow the links immediately below. The graph bars on the material properties cards further below compare ASTM A225 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
190 to 250
Elastic (Young's, Tensile) Modulus
190 GPa 27 x 106 psi
Elongation at Break
21 to 23 %
Fatigue Strength
330 to 390 MPa 47 to 57 x 103 psi
Poisson's Ratio
0.29
Shear Modulus
73 GPa 11 x 106 psi
Shear Strength
390 to 520 MPa 57 to 76 x 103 psi
Tensile Strength: Ultimate (UTS)
620 to 830 MPa 90 to 120 x 103 psi
Tensile Strength: Yield (Proof)
460 to 550 MPa 67 to 80 x 103 psi
Thermal Properties
Latent Heat of Fusion
250 J/g
Maximum Temperature: Mechanical
400 °C 750 °F
Melting Completion (Liquidus)
1460 °C 2660 °F
Melting Onset (Solidus)
1420 °C 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
7.3 % IACS
Electrical Conductivity: Equal Weight (Specific)
8.4 % IACS
Otherwise Unclassified Properties
Base Metal Price
2.3 % relative
Density
7.8 g/cm3 490 lb/ft3
Embodied Carbon
1.8 kg CO2/kg material
Embodied Energy
24 to 25 MJ/kg 10 to 11 x 103 BTU/lb
Embodied Water
48 L/kg 5.7 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
120 to 170 MJ/m3
Resilience: Unit (Modulus of Resilience)
580 to 820 kJ/m3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
24 points
Strength to Weight: Axial
22 to 29 points
Strength to Weight: Bending
21 to 25 points
Thermal Diffusivity
14 mm2/s
Thermal Shock Resistance
18 to 24 points
Followup Questions
Further Reading
ASTM A225: Standard Specification for Pressure Vessel Plates, Alloy Steel, Manganese-Vanadium-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