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S21603 Stainless Steel vs. ASTM A229 Spring Steel

Both S21603 stainless steel and ASTM A229 spring steel are iron alloys. They have 64% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is S21603 stainless steel and the bottom bar is ASTM A229 spring steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
490 to 550
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 45
14
Fatigue Strength, MPa 360
710 to 790
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 79
72
Shear Strength, MPa 490
1020 to 1140
Tensile Strength: Ultimate (UTS), MPa 690
1690 to 1890
Tensile Strength: Yield (Proof), MPa 390
1100 to 1230

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 990
400
Melting Completion (Liquidus), °C 1420
1450
Melting Onset (Solidus), °C 1380
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 17
12

Otherwise Unclassified Properties

Base Metal Price, % relative 17
1.8
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 3.6
1.4
Embodied Energy, MJ/kg 50
19
Embodied Water, L/kg 160
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 270
200 to 230
Resilience: Unit (Modulus of Resilience), kJ/m3 380
3260 to 4080
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 25
60 to 67
Strength to Weight: Bending, points 22
40 to 43
Thermal Shock Resistance, points 15
54 to 60

Alloy Composition

Carbon (C), % 0 to 0.030
0.55 to 0.85
Chromium (Cr), % 17.5 to 22
0
Iron (Fe), % 57.6 to 67.8
97.5 to 99
Manganese (Mn), % 7.5 to 9.0
0.3 to 1.2
Molybdenum (Mo), % 2.0 to 3.0
0
Nickel (Ni), % 5.0 to 7.0
0
Nitrogen (N), % 0.25 to 0.5
0
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 0.75
0.15 to 0.35
Sulfur (S), % 0 to 0.030
0 to 0.050