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ASTM A302 Alloy Steel vs. EN 1.4659 Stainless Steel

Both ASTM A302 alloy steel and EN 1.4659 stainless steel are iron alloys. There are 31 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 1.4659 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
49
Fatigue Strength, MPa 250 to 280
460
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
81
Shear Strength, MPa 370 to 390
640
Tensile Strength: Ultimate (UTS), MPa 590 to 620
900
Tensile Strength: Yield (Proof), MPa 350 to 390
480

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Maximum Temperature: Mechanical, °C 410
1100
Melting Completion (Liquidus), °C 1460
1480
Melting Onset (Solidus), °C 1420
1430
Specific Heat Capacity, J/kg-K 470
460
Thermal Conductivity, W/m-K 39 to 51
12
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
37
Density, g/cm3 7.8 to 7.9
8.2
Embodied Carbon, kg CO2/kg material 1.5 to 1.6
6.5
Embodied Energy, MJ/kg 20 to 21
89
Embodied Water, L/kg 48 to 50
220

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110 to 120
370
Resilience: Unit (Modulus of Resilience), kJ/m3 330 to 410
550
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 21 to 22
31
Strength to Weight: Bending, points 20 to 21
25
Thermal Diffusivity, mm2/s 10 to 14
3.2
Thermal Shock Resistance, points 17 to 18
19