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ASTM A302 Alloy Steel vs. EN 1.1127 Steel

Both ASTM A302 alloy steel and EN 1.1127 steel are iron alloys.

For each property being compared, the top bar is ASTM A302 alloy steel and the bottom bar is EN 1.1127 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180 to 190
190 to 230
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 20 to 23
14 to 25
Fatigue Strength, MPa 250 to 280
280 to 370
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 370 to 390
420 to 480
Tensile Strength: Ultimate (UTS), MPa 590 to 620
660 to 790
Tensile Strength: Yield (Proof), MPa 350 to 390
410 to 580

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 410
400
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 39 to 51
49
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2 to 7.4
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 8.2 to 8.4
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4 to 3.0
2.1
Density, g/cm3 7.8 to 7.9
7.8
Embodied Carbon, kg CO2/kg material 1.5 to 1.6
1.5
Embodied Energy, MJ/kg 20 to 21
19
Embodied Water, L/kg 48 to 50
49

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110 to 120
90 to 140
Resilience: Unit (Modulus of Resilience), kJ/m3 330 to 410
440 to 880
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 21 to 22
23 to 28
Strength to Weight: Bending, points 20 to 21
22 to 24
Thermal Diffusivity, mm2/s 10 to 14
13
Thermal Shock Resistance, points 17 to 18
21 to 25