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ASTM A232 Spring Steel vs. EN 1.4422 Stainless Steel

Both ASTM A232 spring steel and EN 1.4422 stainless steel are iron alloys. Both are furnished in the quenched and tempered condition. They have 82% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is ASTM A232 spring steel and the bottom bar is EN 1.4422 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 14
17
Fatigue Strength, MPa 1040
380
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
76
Shear Strength, MPa 1090
520
Tensile Strength: Ultimate (UTS), MPa 1790
850
Tensile Strength: Yield (Proof), MPa 1610
630

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Maximum Temperature: Mechanical, °C 420
760
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1410
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 52
16
Thermal Expansion, µm/m-K 13
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 2.3
11
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 2.0
2.7
Embodied Energy, MJ/kg 28
37
Embodied Water, L/kg 51
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 250
130
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 64
30
Strength to Weight: Bending, points 42
25
Thermal Diffusivity, mm2/s 14
4.3
Thermal Shock Resistance, points 53
31

Alloy Composition

Carbon (C), % 0.48 to 0.53
0 to 0.020
Chromium (Cr), % 0.8 to 1.1
11 to 13
Copper (Cu), % 0
0.2 to 0.8
Iron (Fe), % 96.8 to 97.7
76.8 to 83.5
Manganese (Mn), % 0.7 to 0.9
0 to 2.0
Molybdenum (Mo), % 0
1.3 to 1.8
Nickel (Ni), % 0
4.0 to 5.0
Nitrogen (N), % 0
0 to 0.020
Phosphorus (P), % 0 to 0.020
0 to 0.040
Silicon (Si), % 0.15 to 0.35
0 to 0.5
Sulfur (S), % 0 to 0.035
0 to 0.0030
Vanadium (V), % 0.15 to 0.3
0