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ASTM A356 Grade 9 vs. EN 1.6958 Steel

Both ASTM A356 grade 9 and EN 1.6958 steel are iron alloys. They have a very high 96% of their average alloy composition in common. There are 32 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 ASTM A356 grade 9 and the bottom bar is EN 1.6958 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
340
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 17
16
Fatigue Strength, MPa 310
700
Poisson's Ratio 0.29
0.29
Reduction in Area, % 50
56
Shear Modulus, GPa 73
73
Tensile Strength: Ultimate (UTS), MPa 670
1140
Tensile Strength: Yield (Proof), MPa 460
1070

Thermal Properties

Latent Heat of Fusion, J/g 260
250
Maximum Temperature: Mechanical, °C 440
450
Melting Completion (Liquidus), °C 1470
1460
Melting Onset (Solidus), °C 1430
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 41
47
Thermal Expansion, µm/m-K 13
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.5
7.9
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
9.1

Otherwise Unclassified Properties

Base Metal Price, % relative 3.6
5.0
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 2.4
2.0
Embodied Energy, MJ/kg 33
27
Embodied Water, L/kg 56
60

Common Calculations

PREN (Pitting Resistance) 4.7
2.9
Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
180
Resilience: Unit (Modulus of Resilience), kJ/m3 570
3050
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 24
40
Strength to Weight: Bending, points 22
31
Thermal Diffusivity, mm2/s 11
13
Thermal Shock Resistance, points 19
39

Alloy Composition

Aluminum (Al), % 0
0.0050 to 0.050
Carbon (C), % 0 to 0.2
0.25 to 0.3
Chromium (Cr), % 1.0 to 1.5
1.2 to 1.7
Iron (Fe), % 95.2 to 97.2
92.6 to 94.5
Manganese (Mn), % 0.5 to 0.9
0.2 to 0.5
Molybdenum (Mo), % 0.9 to 1.2
0.35 to 0.55
Nickel (Ni), % 0
3.3 to 3.8
Phosphorus (P), % 0 to 0.035
0 to 0.020
Silicon (Si), % 0.2 to 0.6
0.15 to 0.3
Sulfur (S), % 0 to 0.030
0 to 0.015
Vanadium (V), % 0.2 to 0.35
0 to 0.12