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EN 1.7228 Steel vs. EN 1.0145 Steel

Both EN 1.7228 steel and EN 1.0145 steel are iron alloys. They have a very high 98% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.7228 steel and the bottom bar is EN 1.0145 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 270
140
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 12
21
Fatigue Strength, MPa 390
180
Impact Strength: V-Notched Charpy, J 22
31
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 540
300
Tensile Strength: Ultimate (UTS), MPa 900
470
Tensile Strength: Yield (Proof), MPa 630
250

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 420
400
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 46
51
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 2.5
1.9
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 1.5
1.4
Embodied Energy, MJ/kg 20
18
Embodied Water, L/kg 51
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
85
Resilience: Unit (Modulus of Resilience), kJ/m3 1050
170
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 32
17
Strength to Weight: Bending, points 26
17
Thermal Diffusivity, mm2/s 12
14
Thermal Shock Resistance, points 26
15

Alloy Composition

Carbon (C), % 0.46 to 0.54
0 to 0.21
Chromium (Cr), % 0.9 to 1.2
0
Copper (Cu), % 0
0 to 0.6
Iron (Fe), % 96.7 to 98
97.5 to 100
Manganese (Mn), % 0.5 to 0.8
0 to 1.6
Molybdenum (Mo), % 0.15 to 0.3
0
Phosphorus (P), % 0 to 0.035
0 to 0.035
Silicon (Si), % 0 to 0.4
0
Sulfur (S), % 0 to 0.035
0 to 0.035