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ASTM A203 Steel vs. EN 1.4371 Stainless Steel

Both ASTM A203 steel and EN 1.4371 stainless steel are iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is ASTM A203 steel and the bottom bar is EN 1.4371 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160 to 180
220 to 230
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 22 to 26
45 to 51
Fatigue Strength, MPa 210 to 280
290 to 340
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
77
Shear Strength, MPa 330 to 370
520 to 540
Tensile Strength: Ultimate (UTS), MPa 520 to 590
740 to 750
Tensile Strength: Yield (Proof), MPa 290 to 390
320 to 340

Thermal Properties

Latent Heat of Fusion, J/g 250
280
Maximum Temperature: Mechanical, °C 410
880
Melting Completion (Liquidus), °C 1460
1410
Melting Onset (Solidus), °C 1420
1370
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 52
15
Thermal Expansion, µm/m-K 13
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4 to 7.6
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 8.5 to 8.7
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 3.2 to 4.0
12
Density, g/cm3 7.9
7.7
Embodied Carbon, kg CO2/kg material 1.6 to 1.7
2.6
Embodied Energy, MJ/kg 21 to 23
38
Embodied Water, L/kg 50 to 52
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110 to 120
270 to 310
Resilience: Unit (Modulus of Resilience), kJ/m3 230 to 410
250 to 300
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 18 to 21
27
Strength to Weight: Bending, points 18 to 20
24
Thermal Diffusivity, mm2/s 14
4.0
Thermal Shock Resistance, points 15 to 17
16