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SAE-AISI 5135 Steel vs. ASTM A572 Steel

Both SAE-AISI 5135 steel and ASTM A572 steel are iron alloys.

For each property being compared, the top bar is SAE-AISI 5135 steel and the bottom bar is ASTM A572 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
140 to 190
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 22
18 to 25
Fatigue Strength, MPa 240
240 to 340
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 320
300 to 380
Tensile Strength: Ultimate (UTS), MPa 510
470 to 620
Tensile Strength: Yield (Proof), MPa 340
330 to 510

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 420
400
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 45
51
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
8.2 to 8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 2.2
2.0
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.4
1.6
Embodied Energy, MJ/kg 19
22
Embodied Water, L/kg 50
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
100 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 300
290 to 690
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 18
17 to 22
Strength to Weight: Bending, points 18
17 to 21
Thermal Diffusivity, mm2/s 12
14
Thermal Shock Resistance, points 16
14 to 18