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ASTM A302 Alloy Steel vs. EN 1.4020 Stainless Steel

Both ASTM A302 alloy steel and EN 1.4020 stainless steel are iron alloys. There are 27 material properties with values for both materials. Properties with values for just one material (6, 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 1.4020 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180 to 190
190 to 340
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 20 to 23
13 to 34
Fatigue Strength, MPa 250 to 280
340 to 540
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
77
Shear Strength, MPa 370 to 390
510 to 680
Tensile Strength: Ultimate (UTS), MPa 590 to 620
770 to 1130
Tensile Strength: Yield (Proof), MPa 350 to 390
430 to 950

Thermal Properties

Latent Heat of Fusion, J/g 250
280
Maximum Temperature: Mechanical, °C 410
890
Melting Completion (Liquidus), °C 1460
1390
Melting Onset (Solidus), °C 1420
1350
Specific Heat Capacity, J/kg-K 470
480
Thermal Expansion, µm/m-K 13
17

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4 to 3.0
11
Density, g/cm3 7.8 to 7.9
7.6
Embodied Carbon, kg CO2/kg material 1.5 to 1.6
2.5
Embodied Energy, MJ/kg 20 to 21
37
Embodied Water, L/kg 48 to 50
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110 to 120
140 to 220
Resilience: Unit (Modulus of Resilience), kJ/m3 330 to 410
460 to 2290
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 21 to 22
28 to 41
Strength to Weight: Bending, points 20 to 21
25 to 32
Thermal Shock Resistance, points 17 to 18
16 to 23