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EN 1.4372 Stainless Steel vs. ASTM A229 Spring Steel

Both EN 1.4372 stainless steel and ASTM A229 spring steel are iron alloys. They have 72% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is EN 1.4372 stainless steel and the bottom bar is ASTM A229 spring steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220
490 to 550
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 47
14
Fatigue Strength, MPa 330
710 to 790
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
72
Shear Strength, MPa 560
1020 to 1140
Tensile Strength: Ultimate (UTS), MPa 790
1690 to 1890
Tensile Strength: Yield (Proof), MPa 350
1100 to 1230

Thermal Properties

Latent Heat of Fusion, J/g 280
250
Maximum Temperature: Mechanical, °C 880
400
Melting Completion (Liquidus), °C 1410
1450
Melting Onset (Solidus), °C 1370
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
50
Thermal Expansion, µm/m-K 17
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 12
1.8
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.6
1.4
Embodied Energy, MJ/kg 38
19
Embodied Water, L/kg 140
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 310
200 to 230
Resilience: Unit (Modulus of Resilience), kJ/m3 320
3260 to 4080
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 29
60 to 67
Strength to Weight: Bending, points 25
40 to 43
Thermal Diffusivity, mm2/s 4.0
14
Thermal Shock Resistance, points 17
54 to 60

Alloy Composition

Carbon (C), % 0 to 0.15
0.55 to 0.85
Chromium (Cr), % 16 to 18
0
Iron (Fe), % 67.5 to 75
97.5 to 99
Manganese (Mn), % 5.5 to 7.5
0.3 to 1.2
Nickel (Ni), % 3.5 to 5.5
0
Nitrogen (N), % 0.050 to 0.25
0
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 1.0
0.15 to 0.35
Sulfur (S), % 0 to 0.015
0 to 0.050