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ASTM A356 Grade 10 vs. S21800 Stainless Steel

Both ASTM A356 grade 10 and S21800 stainless steel are iron alloys. They have 66% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is ASTM A356 grade 10 and the bottom bar is S21800 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
210
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 23
40
Fatigue Strength, MPa 300
330
Poisson's Ratio 0.29
0.28
Reduction in Area, % 39
62
Shear Modulus, GPa 74
75
Tensile Strength: Ultimate (UTS), MPa 670
740
Tensile Strength: Yield (Proof), MPa 430
390

Thermal Properties

Latent Heat of Fusion, J/g 260
340
Maximum Temperature: Mechanical, °C 460
900
Melting Completion (Liquidus), °C 1470
1360
Melting Onset (Solidus), °C 1430
1310
Specific Heat Capacity, J/kg-K 470
500
Thermal Expansion, µm/m-K 13
16

Otherwise Unclassified Properties

Base Metal Price, % relative 3.9
15
Density, g/cm3 7.9
7.5
Embodied Carbon, kg CO2/kg material 1.8
3.1
Embodied Energy, MJ/kg 23
45
Embodied Water, L/kg 59
150

Common Calculations

PREN (Pitting Resistance) 5.9
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
250
Resilience: Unit (Modulus of Resilience), kJ/m3 480
390
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
26
Strength to Weight: Axial, points 24
27
Strength to Weight: Bending, points 22
24
Thermal Shock Resistance, points 19
17

Alloy Composition

Carbon (C), % 0 to 0.2
0 to 0.1
Chromium (Cr), % 2.0 to 2.8
16 to 18
Iron (Fe), % 94.4 to 96.6
59.1 to 65.4
Manganese (Mn), % 0.5 to 0.8
7.0 to 9.0
Molybdenum (Mo), % 0.9 to 1.2
0
Nickel (Ni), % 0
8.0 to 9.0
Nitrogen (N), % 0
0.080 to 0.18
Phosphorus (P), % 0 to 0.035
0 to 0.060
Silicon (Si), % 0 to 0.6
3.5 to 4.5
Sulfur (S), % 0 to 0.030
0 to 0.030