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ASTM A356 Grade 8 vs. EN 1.6982 Stainless Steel

Both ASTM A356 grade 8 and EN 1.6982 stainless steel are iron alloys. They have 84% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is ASTM A356 grade 8 and the bottom bar is EN 1.6982 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 21
17
Fatigue Strength, MPa 270
350
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
76
Tensile Strength: Ultimate (UTS), MPa 630
800
Tensile Strength: Yield (Proof), MPa 390
570

Thermal Properties

Latent Heat of Fusion, J/g 260
280
Maximum Temperature: Mechanical, °C 440
770
Melting Completion (Liquidus), °C 1470
1440
Melting Onset (Solidus), °C 1430
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 38
25
Thermal Expansion, µm/m-K 13
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.5
2.7
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
3.2

Otherwise Unclassified Properties

Base Metal Price, % relative 3.5
10
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.0
2.4
Embodied Energy, MJ/kg 26
33
Embodied Water, L/kg 55
110

Common Calculations

PREN (Pitting Resistance) 4.7
14
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
120
Resilience: Unit (Modulus of Resilience), kJ/m3 390
820
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 22
28
Strength to Weight: Bending, points 21
25
Thermal Diffusivity, mm2/s 10
6.6
Thermal Shock Resistance, points 18
29

Alloy Composition

Carbon (C), % 0 to 0.2
0 to 0.050
Chromium (Cr), % 1.0 to 1.5
12 to 13.5
Iron (Fe), % 95.4 to 97.4
78.7 to 84.5
Manganese (Mn), % 0.5 to 0.9
0 to 1.0
Molybdenum (Mo), % 0.9 to 1.2
0 to 0.7
Nickel (Ni), % 0
3.5 to 5.0
Phosphorus (P), % 0 to 0.035
0 to 0.035
Silicon (Si), % 0.2 to 0.6
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.015
Vanadium (V), % 0.050 to 0.15
0