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S21800 Stainless Steel vs. ASTM A266 Carbon Steel

Both S21800 stainless steel and ASTM A266 carbon steel are iron alloys. 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 S21800 stainless steel and the bottom bar is ASTM A266 carbon steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210
150 to 180
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 40
21 to 26
Fatigue Strength, MPa 330
170 to 200
Poisson's Ratio 0.28
0.29
Reduction in Area, % 62
34 to 43
Shear Modulus, GPa 75
73
Shear Strength, MPa 510
320 to 380
Tensile Strength: Ultimate (UTS), MPa 740
500 to 600
Tensile Strength: Yield (Proof), MPa 390
230 to 290

Thermal Properties

Latent Heat of Fusion, J/g 340
250
Maximum Temperature: Mechanical, °C 900
400
Melting Completion (Liquidus), °C 1360
1460
Melting Onset (Solidus), °C 1310
1420
Specific Heat Capacity, J/kg-K 500
470
Thermal Expansion, µm/m-K 16
12

Otherwise Unclassified Properties

Base Metal Price, % relative 15
1.8
Density, g/cm3 7.5
7.8
Embodied Carbon, kg CO2/kg material 3.1
1.4
Embodied Energy, MJ/kg 45
18 to 19
Embodied Water, L/kg 150
46 to 47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 250
110
Resilience: Unit (Modulus of Resilience), kJ/m3 390
140 to 230
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 26
24
Strength to Weight: Axial, points 27
18 to 21
Strength to Weight: Bending, points 24
18 to 20
Thermal Shock Resistance, points 17
16 to 19