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ASTM A229 Spring Steel vs. EN 1.7376 Steel

Both ASTM A229 spring steel and EN 1.7376 steel are iron alloys. They have 89% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (2, 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 1.7376 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 490 to 550
210
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 14
20
Fatigue Strength, MPa 710 to 790
320
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 72
75
Tensile Strength: Ultimate (UTS), MPa 1690 to 1890
710
Tensile Strength: Yield (Proof), MPa 1100 to 1230
460

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Maximum Temperature: Mechanical, °C 400
600
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1410
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 50
26
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
9.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
11

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
6.5
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.4
2.1
Embodied Energy, MJ/kg 19
29
Embodied Water, L/kg 46
88

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 200 to 230
130
Resilience: Unit (Modulus of Resilience), kJ/m3 3260 to 4080
560
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 60 to 67
25
Strength to Weight: Bending, points 40 to 43
23
Thermal Diffusivity, mm2/s 14
6.9
Thermal Shock Resistance, points 54 to 60
20

Alloy Composition

Carbon (C), % 0.55 to 0.85
0.12 to 0.19
Chromium (Cr), % 0
8.0 to 10
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 97.5 to 99
86.2 to 90.6
Manganese (Mn), % 0.3 to 1.2
0.35 to 0.65
Molybdenum (Mo), % 0
0.9 to 1.2
Nickel (Ni), % 0
0 to 0.4
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0.15 to 0.35
0 to 1.0
Sulfur (S), % 0 to 0.050
0 to 0.030
Vanadium (V), % 0
0 to 0.050