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EN 1.8958 Steel vs. EN 1.0577 Steel

Both EN 1.8958 steel and EN 1.0577 steel are iron alloys. Both are furnished in the hot worked condition. They have a very high 99% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.8958 steel and the bottom bar is EN 1.0577 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 130
150
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 19
20
Fatigue Strength, MPa 150
230
Impact Strength: V-Notched Charpy, J 30
31
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 270
330
Tensile Strength: Ultimate (UTS), MPa 430
530
Tensile Strength: Yield (Proof), MPa 220
330

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 410
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
50
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4
1.9
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 1.5
1.4
Embodied Energy, MJ/kg 19
19
Embodied Water, L/kg 50
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 70
93
Resilience: Unit (Modulus of Resilience), kJ/m3 130
290
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 15
19
Strength to Weight: Bending, points 16
18
Thermal Diffusivity, mm2/s 12
14
Thermal Shock Resistance, points 13
17

Alloy Composition

Carbon (C), % 0 to 0.16
0 to 0.24
Chromium (Cr), % 0.35 to 0.85
0
Copper (Cu), % 0.2 to 0.6
0 to 0.6
Iron (Fe), % 96.5 to 99.3
96.8 to 100
Manganese (Mn), % 0.15 to 0.7
0 to 1.7
Nickel (Ni), % 0 to 0.7
0
Nitrogen (N), % 0 to 0.010
0
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 0.45
0 to 0.6
Sulfur (S), % 0 to 0.040
0 to 0.035