ASTM A229 Spring Steel vs. EN 1.7380 Steel
Both ASTM A229 spring steel and EN 1.7380 steel are iron alloys. They have a very high 97% of their average alloy composition in common. There are 31 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 1.7380 steel.
Metric UnitsUS Customary Units
Mechanical Properties
Brinell Hardness | 490 to 550 | |
160 to 170 |
Elastic (Young's, Tensile) Modulus, GPa | 190 | |
190 |
Elongation at Break, % | 14 | |
19 to 20 |
Fatigue Strength, MPa | 710 to 790 | |
200 to 230 |
Poisson's Ratio | 0.29 | |
0.29 |
Shear Modulus, GPa | 72 | |
74 |
Shear Strength, MPa | 1020 to 1140 | |
330 to 350 |
Tensile Strength: Ultimate (UTS), MPa | 1690 to 1890 | |
540 to 550 |
Tensile Strength: Yield (Proof), MPa | 1100 to 1230 | |
290 to 330 |
Thermal Properties
Latent Heat of Fusion, J/g | 250 | |
260 |
Maximum Temperature: Mechanical, °C | 400 | |
460 |
Melting Completion (Liquidus), °C | 1450 | |
1470 |
Melting Onset (Solidus), °C | 1410 | |
1430 |
Specific Heat Capacity, J/kg-K | 470 | |
470 |
Thermal Conductivity, W/m-K | 50 | |
39 |
Thermal Expansion, µm/m-K | 12 | |
13 |
Electrical Properties
Electrical Conductivity: Equal Volume, % IACS | 7.2 | |
7.6 |
Electrical Conductivity: Equal Weight (Specific), % IACS | 8.3 | |
8.7 |
Otherwise Unclassified Properties
Base Metal Price, % relative | 1.8 | |
3.8 |
Density, g/cm3 | 7.8 | |
7.9 |
Embodied Carbon, kg CO2/kg material | 1.4 | |
1.8 |
Embodied Energy, MJ/kg | 19 | |
23 |
Embodied Water, L/kg | 46 | |
59 |
Common Calculations
Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 200 to 230 | |
87 to 98 |
Resilience: Unit (Modulus of Resilience), kJ/m3 | 3260 to 4080 | |
230 to 280 |
Stiffness to Weight: Axial, points | 13 | |
13 |
Stiffness to Weight: Bending, points | 24 | |
24 |
Strength to Weight: Axial, points | 60 to 67 | |
19 to 20 |
Strength to Weight: Bending, points | 40 to 43 | |
19 |
Thermal Diffusivity, mm2/s | 14 | |
11 |
Thermal Shock Resistance, points | 54 to 60 | |
15 to 16 |
Alloy Composition
Carbon (C), % | 0.55 to 0.85 | |
0.080 to 0.14 |
Chromium (Cr), % | 0 | |
2.0 to 2.5 |
Copper (Cu), % | 0 | |
0 to 0.3 |
Iron (Fe), % | 97.5 to 99 | |
94.6 to 96.6 |
Manganese (Mn), % | 0.3 to 1.2 | |
0.4 to 0.8 |
Molybdenum (Mo), % | 0 | |
0.9 to 1.1 |
Nitrogen (N), % | 0 | |
0 to 0.012 |
Phosphorus (P), % | 0 to 0.040 | |
0 to 0.020 |
Silicon (Si), % | 0.15 to 0.35 | |
0 to 0.5 |
Sulfur (S), % | 0 to 0.050 | |
0 to 0.010 |