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ASTM A302 Alloy Steel vs. EN 1.4859 Stainless Steel

Both ASTM A302 alloy steel and EN 1.4859 stainless steel are iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (3, 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 1.4859 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180 to 190
140
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 20 to 23
23
Fatigue Strength, MPa 250 to 280
140
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
76
Tensile Strength: Ultimate (UTS), MPa 590 to 620
490
Tensile Strength: Yield (Proof), MPa 350 to 390
210

Thermal Properties

Latent Heat of Fusion, J/g 250
310
Maximum Temperature: Mechanical, °C 410
1050
Melting Completion (Liquidus), °C 1460
1410
Melting Onset (Solidus), °C 1420
1360
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 39 to 51
13
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2 to 7.4
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 8.2 to 8.4
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4 to 3.0
36
Density, g/cm3 7.8 to 7.9
8.0
Embodied Carbon, kg CO2/kg material 1.5 to 1.6
6.2
Embodied Energy, MJ/kg 20 to 21
88
Embodied Water, L/kg 48 to 50
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110 to 120
91
Resilience: Unit (Modulus of Resilience), kJ/m3 330 to 410
110
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 21 to 22
17
Strength to Weight: Bending, points 20 to 21
17
Thermal Diffusivity, mm2/s 10 to 14
3.4
Thermal Shock Resistance, points 17 to 18
11