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ASTM A227 Spring Steel vs. EN 1.4415 Stainless Steel

Both ASTM A227 spring steel and EN 1.4415 stainless steel are iron alloys. They have 80% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is ASTM A227 spring steel and the bottom bar is EN 1.4415 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 12
17 to 20
Fatigue Strength, MPa 900 to 1160
470 to 510
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 72
77
Shear Strength, MPa 1030 to 1330
520 to 570
Tensile Strength: Ultimate (UTS), MPa 1720 to 2220
830 to 930
Tensile Strength: Yield (Proof), MPa 1430 to 1850
730 to 840

Thermal Properties

Latent Heat of Fusion, J/g 250
280
Maximum Temperature: Mechanical, °C 400
790
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1410
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 52
19
Thermal Expansion, µm/m-K 12
9.9

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
2.8

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
13
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 1.4
3.6
Embodied Energy, MJ/kg 19
51
Embodied Water, L/kg 46
120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 200 to 260
150 to 160
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 61 to 79
29 to 33
Strength to Weight: Bending, points 41 to 48
25 to 27
Thermal Diffusivity, mm2/s 14
5.1
Thermal Shock Resistance, points 55 to 71
30 to 34

Alloy Composition

Carbon (C), % 0.45 to 0.85
0 to 0.030
Chromium (Cr), % 0
11.5 to 13.5
Iron (Fe), % 97.4 to 99.1
75.9 to 82.4
Manganese (Mn), % 0.3 to 1.3
0 to 0.5
Molybdenum (Mo), % 0
1.5 to 2.5
Nickel (Ni), % 0
4.5 to 6.5
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0.15 to 0.35
0 to 0.5
Sulfur (S), % 0 to 0.050
0 to 0.015
Titanium (Ti), % 0
0 to 0.010
Vanadium (V), % 0
0.1 to 0.5

Comparable Variants