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ASTM A302 Alloy Steel vs. EN 1.4658 Stainless Steel

Both ASTM A302 alloy steel and EN 1.4658 stainless steel are iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is ASTM A302 alloy steel and the bottom bar is EN 1.4658 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180 to 190
260
Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 20 to 23
28
Fatigue Strength, MPa 250 to 280
530
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 73
81
Shear Strength, MPa 370 to 390
580
Tensile Strength: Ultimate (UTS), MPa 590 to 620
900
Tensile Strength: Yield (Proof), MPa 350 to 390
730

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Maximum Temperature: Mechanical, °C 410
1100
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1420
1400
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 39 to 51
16
Thermal Expansion, µm/m-K 13
13

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4 to 3.0
25
Density, g/cm3 7.8 to 7.9
7.8
Embodied Carbon, kg CO2/kg material 1.5 to 1.6
4.5
Embodied Energy, MJ/kg 20 to 21
61
Embodied Water, L/kg 48 to 50
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110 to 120
240
Resilience: Unit (Modulus of Resilience), kJ/m3 330 to 410
1280
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 21 to 22
32
Strength to Weight: Bending, points 20 to 21
26
Thermal Diffusivity, mm2/s 10 to 14
4.3
Thermal Shock Resistance, points 17 to 18
24