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EN 1.4938 Stainless Steel vs. ASTM A225 Steel

Both EN 1.4938 stainless steel and ASTM A225 steel are iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is EN 1.4938 stainless steel and the bottom bar is ASTM A225 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 16 to 17
21 to 23
Fatigue Strength, MPa 390 to 520
330 to 390
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
73
Shear Strength, MPa 540 to 630
390 to 520
Tensile Strength: Ultimate (UTS), MPa 870 to 1030
620 to 830
Tensile Strength: Yield (Proof), MPa 640 to 870
460 to 550

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Maximum Temperature: Mechanical, °C 750
400
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 30
52
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 10
2.3
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.3
1.8
Embodied Energy, MJ/kg 47
24 to 25
Embodied Water, L/kg 110
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 160
120 to 170
Resilience: Unit (Modulus of Resilience), kJ/m3 1050 to 1920
580 to 820
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 31 to 37
22 to 29
Strength to Weight: Bending, points 26 to 29
21 to 25
Thermal Diffusivity, mm2/s 8.1
14
Thermal Shock Resistance, points 30 to 35
18 to 24

Comparable Variants