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ASTM A231 Spring Steel vs. EN 1.4886 Stainless Steel

Both ASTM A231 spring steel and EN 1.4886 stainless steel are iron alloys. They have 46% 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 ASTM A231 spring steel and the bottom bar is EN 1.4886 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 540
170
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 14
45
Fatigue Strength, MPa 1000
280
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
76
Shear Strength, MPa 1080
400
Tensile Strength: Ultimate (UTS), MPa 1790
580
Tensile Strength: Yield (Proof), MPa 1570
300

Thermal Properties

Latent Heat of Fusion, J/g 250
320
Maximum Temperature: Mechanical, °C 420
1100
Melting Completion (Liquidus), °C 1460
1390
Melting Onset (Solidus), °C 1410
1340
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 52
12
Thermal Expansion, µm/m-K 13
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 2.3
31
Density, g/cm3 7.8
8.0
Embodied Carbon, kg CO2/kg material 2.0
5.4
Embodied Energy, MJ/kg 28
76
Embodied Water, L/kg 51
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 230
220
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 64
20
Strength to Weight: Bending, points 42
19
Thermal Diffusivity, mm2/s 14
3.1
Thermal Shock Resistance, points 53
14

Alloy Composition

Carbon (C), % 0.48 to 0.53
0 to 0.15
Chromium (Cr), % 0.8 to 1.1
17 to 20
Iron (Fe), % 96.7 to 97.7
38.7 to 49
Manganese (Mn), % 0.7 to 0.9
0 to 2.0
Nickel (Ni), % 0
33 to 37
Nitrogen (N), % 0
0 to 0.1
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0.15 to 0.35
1.0 to 2.0
Sulfur (S), % 0 to 0.040
0 to 0.015
Vanadium (V), % 0.15 to 0.3
0