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EN 1.4658 Stainless Steel vs. ASTM A231 Spring Steel

Both EN 1.4658 stainless steel and ASTM A231 spring steel are iron alloys. They have 59% 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 EN 1.4658 stainless steel and the bottom bar is ASTM A231 spring steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 260
540
Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 28
14
Fatigue Strength, MPa 530
1000
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 81
73
Shear Strength, MPa 580
1080
Tensile Strength: Ultimate (UTS), MPa 900
1790
Tensile Strength: Yield (Proof), MPa 730
1570

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 1100
420
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1400
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 16
52
Thermal Expansion, µm/m-K 13
13

Otherwise Unclassified Properties

Base Metal Price, % relative 25
2.3
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 4.5
2.0
Embodied Energy, MJ/kg 61
28
Embodied Water, L/kg 200
51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
230
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 32
64
Strength to Weight: Bending, points 26
42
Thermal Diffusivity, mm2/s 4.3
14
Thermal Shock Resistance, points 24
53

Alloy Composition

Carbon (C), % 0 to 0.030
0.48 to 0.53
Chromium (Cr), % 26 to 29
0.8 to 1.1
Cobalt (Co), % 0.5 to 2.0
0
Copper (Cu), % 0 to 1.0
0
Iron (Fe), % 50.9 to 63.7
96.7 to 97.7
Manganese (Mn), % 0 to 1.5
0.7 to 0.9
Molybdenum (Mo), % 4.0 to 5.0
0
Nickel (Ni), % 5.5 to 9.5
0
Nitrogen (N), % 0.3 to 0.5
0
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0 to 0.5
0.15 to 0.35
Sulfur (S), % 0 to 0.010
0 to 0.040
Vanadium (V), % 0
0.15 to 0.3