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EN 1.6956 Steel vs. ASTM A242 HSLA Steel

Both EN 1.6956 steel and ASTM A242 HSLA steel are iron alloys. They have a moderately high 94% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is EN 1.6956 steel and the bottom bar is ASTM A242 HSLA steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 370
150
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 9.6
22
Fatigue Strength, MPa 680
230
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 730
310
Tensile Strength: Ultimate (UTS), MPa 1230
490
Tensile Strength: Yield (Proof), MPa 1120
330

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 440
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 46
52
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.0
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 9.1
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 5.0
1.9
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 2.2
1.4
Embodied Energy, MJ/kg 31
18
Embodied Water, L/kg 60
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
95
Resilience: Unit (Modulus of Resilience), kJ/m3 3320
290
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 43
17
Strength to Weight: Bending, points 32
17
Thermal Diffusivity, mm2/s 12
14
Thermal Shock Resistance, points 36
14

Alloy Composition

Carbon (C), % 0.28 to 0.38
0 to 0.15
Chromium (Cr), % 1.0 to 1.7
0
Copper (Cu), % 0
0.2 to 0.45
Iron (Fe), % 92.4 to 95.3
98.2 to 99.8
Manganese (Mn), % 0.15 to 0.4
0 to 1.0
Molybdenum (Mo), % 0.3 to 0.6
0
Nickel (Ni), % 2.9 to 3.8
0
Phosphorus (P), % 0 to 0.035
0 to 0.15
Silicon (Si), % 0 to 0.4
0
Sulfur (S), % 0 to 0.035
0 to 0.050
Vanadium (V), % 0.080 to 0.25
0