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ASTM A229 Spring Steel vs. EN 1.3975 Stainless Steel

Both ASTM A229 spring steel and EN 1.3975 stainless steel are iron alloys. They have 63% of their average alloy composition in common. There are 26 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 ASTM A229 spring steel and the bottom bar is EN 1.3975 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 490 to 550
190
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 14
27
Fatigue Strength, MPa 710 to 790
230
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 72
76
Tensile Strength: Ultimate (UTS), MPa 1690 to 1890
660
Tensile Strength: Yield (Proof), MPa 1100 to 1230
320

Thermal Properties

Latent Heat of Fusion, J/g 250
340
Maximum Temperature: Mechanical, °C 400
910
Melting Completion (Liquidus), °C 1450
1360
Melting Onset (Solidus), °C 1410
1320
Specific Heat Capacity, J/kg-K 470
500
Thermal Expansion, µm/m-K 12
16

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
15
Density, g/cm3 7.8
7.5
Embodied Carbon, kg CO2/kg material 1.4
3.3
Embodied Energy, MJ/kg 19
47
Embodied Water, L/kg 46
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 200 to 230
150
Resilience: Unit (Modulus of Resilience), kJ/m3 3260 to 4080
270
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
26
Strength to Weight: Axial, points 60 to 67
24
Strength to Weight: Bending, points 40 to 43
22
Thermal Shock Resistance, points 54 to 60
15

Alloy Composition

Carbon (C), % 0.55 to 0.85
0 to 0.050
Chromium (Cr), % 0
16 to 18
Iron (Fe), % 97.5 to 99
58.2 to 65.4
Manganese (Mn), % 0.3 to 1.2
7.0 to 9.0
Molybdenum (Mo), % 0
0 to 1.0
Nickel (Ni), % 0
8.0 to 9.0
Nitrogen (N), % 0
0.080 to 0.18
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0.15 to 0.35
3.5 to 4.5
Sulfur (S), % 0 to 0.050
0 to 0.030