EN 1.4034 +A Steel vs. EN 1.4122 +A Steel
Both EN 1.4034 +A steel and EN 1.4122 +A steel are iron alloys. Both are furnished in the annealed condition. They have a very high 95% of their average alloy composition in common.
For each property being compared, the top bar is EN 1.4034 +A steel and the bottom bar is EN 1.4122 +A steel.
Metric UnitsUS Customary Units
Mechanical Properties
Brinell Hardness | 220 | |
240 |
Elastic (Young's, Tensile) Modulus, GPa | 190 | |
200 |
Elongation at Break, % | 14 | |
14 |
Fatigue Strength, MPa | 230 | |
260 |
Poisson's Ratio | 0.28 | |
0.28 |
Rockwell B Hardness | 85 | |
86 |
Shear Modulus, GPa | 76 | |
77 |
Shear Strength, MPa | 420 | |
480 |
Tensile Strength: Ultimate (UTS), MPa | 690 | |
790 |
Tensile Strength: Yield (Proof), MPa | 390 | |
450 |
Thermal Properties
Latent Heat of Fusion, J/g | 270 | |
280 |
Maximum Temperature: Corrosion, °C | 390 | |
400 |
Maximum Temperature: Mechanical, °C | 770 | |
870 |
Melting Completion (Liquidus), °C | 1440 | |
1440 |
Melting Onset (Solidus), °C | 1390 | |
1400 |
Specific Heat Capacity, J/kg-K | 480 | |
480 |
Thermal Conductivity, W/m-K | 30 | |
15 |
Thermal Expansion, µm/m-K | 11 | |
10 |
Electrical Properties
Electrical Conductivity: Equal Volume, % IACS | 3.1 | |
2.2 |
Electrical Conductivity: Equal Weight (Specific), % IACS | 3.7 | |
2.5 |
Otherwise Unclassified Properties
Base Metal Price, % relative | 7.0 | |
9.5 |
Density, g/cm3 | 7.7 | |
7.7 |
Embodied Carbon, kg CO2/kg material | 2.0 | |
2.4 |
Embodied Energy, MJ/kg | 27 | |
33 |
Embodied Water, L/kg | 100 | |
120 |
Common Calculations
PREN (Pitting Resistance) | 14 | |
20 |
Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 81 | |
93 |
Resilience: Unit (Modulus of Resilience), kJ/m3 | 400 | |
520 |
Stiffness to Weight: Axial, points | 14 | |
14 |
Stiffness to Weight: Bending, points | 25 | |
25 |
Strength to Weight: Axial, points | 25 | |
28 |
Strength to Weight: Bending, points | 22 | |
25 |
Thermal Diffusivity, mm2/s | 8.1 | |
4.0 |
Thermal Shock Resistance, points | 24 | |
28 |
Alloy Composition
Carbon (C), % | 0.43 to 0.5 | |
0.33 to 0.45 |
Chromium (Cr), % | 12.5 to 14.5 | |
15.5 to 17.5 |
Iron (Fe), % | 83 to 87.1 | |
77.2 to 83.4 |
Manganese (Mn), % | 0 to 1.0 | |
0 to 1.5 |
Molybdenum (Mo), % | 0 | |
0.8 to 1.3 |
Nickel (Ni), % | 0 | |
0 to 1.0 |
Phosphorus (P), % | 0 to 0.040 | |
0 to 0.040 |
Silicon (Si), % | 0 to 1.0 | |
0 to 1.0 |
Sulfur (S), % | 0 to 0.015 | |
0 to 0.015 |