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EN 1.4557 Stainless Steel vs. ASTM A229 Spring Steel

Both EN 1.4557 stainless steel and ASTM A229 spring steel are iron alloys. They have 54% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is EN 1.4557 stainless steel and the bottom bar is ASTM A229 spring steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
490 to 550
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 40
14
Fatigue Strength, MPa 260
710 to 790
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 80
72
Tensile Strength: Ultimate (UTS), MPa 560
1690 to 1890
Tensile Strength: Yield (Proof), MPa 300
1100 to 1230

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 1090
400
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1420
1410
Specific Heat Capacity, J/kg-K 460
470
Thermal Conductivity, W/m-K 15
50
Thermal Expansion, µm/m-K 17
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.2
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 29
1.8
Density, g/cm3 8.0
7.8
Embodied Carbon, kg CO2/kg material 5.6
1.4
Embodied Energy, MJ/kg 76
19
Embodied Water, L/kg 190
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
200 to 230
Resilience: Unit (Modulus of Resilience), kJ/m3 210
3260 to 4080
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 19
60 to 67
Strength to Weight: Bending, points 19
40 to 43
Thermal Diffusivity, mm2/s 4.0
14
Thermal Shock Resistance, points 12
54 to 60

Alloy Composition

Carbon (C), % 0 to 0.020
0.55 to 0.85
Chromium (Cr), % 19.5 to 20.5
0
Copper (Cu), % 0.5 to 1.0
0
Iron (Fe), % 49.5 to 56.3
97.5 to 99
Manganese (Mn), % 0 to 1.2
0.3 to 1.2
Molybdenum (Mo), % 6.0 to 7.0
0
Nickel (Ni), % 17.5 to 19.5
0
Nitrogen (N), % 0.18 to 0.24
0
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0 to 1.0
0.15 to 0.35
Sulfur (S), % 0 to 0.010
0 to 0.050