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ASTM A227 Spring Steel vs. EN 1.7176 Steel

Both ASTM A227 spring steel and EN 1.7176 steel are iron alloys. Their average alloy composition is basically identical. There are 25 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 1.7176 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 500 to 640
200 to 470
Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 72
73
Tensile Strength: Ultimate (UTS), MPa 1720 to 2220
670 to 2010

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 400
420
Melting Completion (Liquidus), °C 1450
1450
Melting Onset (Solidus), °C 1410
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 52
48
Thermal Expansion, µm/m-K 12
13

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
2.1
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.4
1.4
Embodied Energy, MJ/kg 19
19
Embodied Water, L/kg 46
50

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 61 to 79
24 to 71
Strength to Weight: Bending, points 41 to 48
22 to 45
Thermal Diffusivity, mm2/s 14
13
Thermal Shock Resistance, points 55 to 71
20 to 59

Alloy Composition

Carbon (C), % 0.45 to 0.85
0.52 to 0.59
Chromium (Cr), % 0
0.7 to 1.0
Iron (Fe), % 97.4 to 99.1
97 to 98.1
Manganese (Mn), % 0.3 to 1.3
0.7 to 1.0
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0.15 to 0.35
0 to 0.4
Sulfur (S), % 0 to 0.050
0 to 0.025

Comparable Variants