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EN 1.4640 Stainless Steel vs. ASTM A204 Steel

Both EN 1.4640 stainless steel and ASTM A204 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 EN 1.4640 stainless steel and the bottom bar is ASTM A204 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190 to 200
160 to 180
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 51
18 to 22
Fatigue Strength, MPa 230 to 250
200 to 220
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Shear Strength, MPa 440 to 460
330 to 360
Tensile Strength: Ultimate (UTS), MPa 620 to 650
520 to 590
Tensile Strength: Yield (Proof), MPa 240 to 260
290 to 330

Thermal Properties

Latent Heat of Fusion, J/g 280
250
Maximum Temperature: Mechanical, °C 930
410
Melting Completion (Liquidus), °C 1420
1470
Melting Onset (Solidus), °C 1380
1420 to 1430
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
52
Thermal Expansion, µm/m-K 16
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 14
2.4
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 2.8
1.5
Embodied Energy, MJ/kg 40
20
Embodied Water, L/kg 150
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 250 to 260
90 to 95
Resilience: Unit (Modulus of Resilience), kJ/m3 150 to 170
220 to 290
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 22 to 23
18 to 21
Strength to Weight: Bending, points 21
18 to 20
Thermal Diffusivity, mm2/s 4.0
14
Thermal Shock Resistance, points 14 to 15
15 to 17