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ASTM A356 Grade 8 vs. EN 1.4659 Stainless Steel

Both ASTM A356 grade 8 and EN 1.4659 stainless steel are iron alloys. They have 44% of their average alloy composition in common. There are 31 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 1.4659 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
260
Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 21
49
Fatigue Strength, MPa 270
460
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
81
Tensile Strength: Ultimate (UTS), MPa 630
900
Tensile Strength: Yield (Proof), MPa 390
480

Thermal Properties

Latent Heat of Fusion, J/g 260
300
Maximum Temperature: Mechanical, °C 440
1100
Melting Completion (Liquidus), °C 1470
1480
Melting Onset (Solidus), °C 1430
1430
Specific Heat Capacity, J/kg-K 470
460
Thermal Conductivity, W/m-K 38
12
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.5
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 3.5
37
Density, g/cm3 7.8
8.2
Embodied Carbon, kg CO2/kg material 2.0
6.5
Embodied Energy, MJ/kg 26
89
Embodied Water, L/kg 55
220

Common Calculations

PREN (Pitting Resistance) 4.7
54
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
370
Resilience: Unit (Modulus of Resilience), kJ/m3 390
550
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 22
31
Strength to Weight: Bending, points 21
25
Thermal Diffusivity, mm2/s 10
3.2
Thermal Shock Resistance, points 18
19

Alloy Composition

Carbon (C), % 0 to 0.2
0 to 0.020
Chromium (Cr), % 1.0 to 1.5
23 to 25
Copper (Cu), % 0
1.0 to 2.0
Iron (Fe), % 95.4 to 97.4
35.7 to 45.7
Manganese (Mn), % 0.5 to 0.9
2.0 to 4.0
Molybdenum (Mo), % 0.9 to 1.2
5.5 to 6.5
Nickel (Ni), % 0
21 to 23
Nitrogen (N), % 0
0.35 to 0.5
Phosphorus (P), % 0 to 0.035
0 to 0.030
Silicon (Si), % 0.2 to 0.6
0 to 0.7
Sulfur (S), % 0 to 0.030
0 to 0.010
Tungsten (W), % 0
1.5 to 2.5
Vanadium (V), % 0.050 to 0.15
0