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ASTM A356 Grade 8 vs. EN 1.4948 Stainless Steel

Both ASTM A356 grade 8 and EN 1.4948 stainless steel are iron alloys. They have 73% 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 1.4948 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
190
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 21
48
Fatigue Strength, MPa 270
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
77
Tensile Strength: Ultimate (UTS), MPa 630
610
Tensile Strength: Yield (Proof), MPa 390
210

Thermal Properties

Latent Heat of Fusion, J/g 260
290
Maximum Temperature: Mechanical, °C 440
930
Melting Completion (Liquidus), °C 1470
1430
Melting Onset (Solidus), °C 1430
1380
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 38
17
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.5
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
2.8

Otherwise Unclassified Properties

Base Metal Price, % relative 3.5
15
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.0
3.0
Embodied Energy, MJ/kg 26
43
Embodied Water, L/kg 55
140

Common Calculations

PREN (Pitting Resistance) 4.7
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
230
Resilience: Unit (Modulus of Resilience), kJ/m3 390
110
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 22
22
Strength to Weight: Bending, points 21
21
Thermal Diffusivity, mm2/s 10
4.5
Thermal Shock Resistance, points 18
14

Alloy Composition

Carbon (C), % 0 to 0.2
0.040 to 0.080
Chromium (Cr), % 1.0 to 1.5
17 to 19
Iron (Fe), % 95.4 to 97.4
66.8 to 75
Manganese (Mn), % 0.5 to 0.9
0 to 2.0
Molybdenum (Mo), % 0.9 to 1.2
0
Nickel (Ni), % 0
8.0 to 11
Nitrogen (N), % 0
0 to 0.1
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