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ASTM A203 Steel vs. EN 1.4409 Stainless Steel

Both ASTM A203 steel and EN 1.4409 stainless steel are iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is ASTM A203 steel and the bottom bar is EN 1.4409 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160 to 180
140
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 22 to 26
34
Fatigue Strength, MPa 210 to 280
180
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
78
Tensile Strength: Ultimate (UTS), MPa 520 to 590
490
Tensile Strength: Yield (Proof), MPa 290 to 390
220

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Maximum Temperature: Mechanical, °C 410
990
Melting Completion (Liquidus), °C 1460
1440
Melting Onset (Solidus), °C 1420
1390
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 52
15
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4 to 7.6
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 8.5 to 8.7
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 3.2 to 4.0
19
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 1.6 to 1.7
3.7
Embodied Energy, MJ/kg 21 to 23
52
Embodied Water, L/kg 50 to 52
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110 to 120
140
Resilience: Unit (Modulus of Resilience), kJ/m3 230 to 410
120
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 18 to 21
17
Strength to Weight: Bending, points 18 to 20
18
Thermal Diffusivity, mm2/s 14
4.1
Thermal Shock Resistance, points 15 to 17
11