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EN 1.7375 Steel vs. EN 1.6956 Steel

Both EN 1.7375 steel and EN 1.6956 steel are iron alloys. They have a very high 96% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.7375 steel and the bottom bar is EN 1.6956 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
370
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 20
9.6
Fatigue Strength, MPa 270
680
Impact Strength: V-Notched Charpy, J 80
25
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 74
73
Shear Strength, MPa 380
730
Tensile Strength: Ultimate (UTS), MPa 620
1230
Tensile Strength: Yield (Proof), MPa 400
1120

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 460
440
Melting Completion (Liquidus), °C 1470
1460
Melting Onset (Solidus), °C 1430
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 39
46
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
8.0
Electrical Conductivity: Equal Weight (Specific), % IACS 8.7
9.1

Otherwise Unclassified Properties

Base Metal Price, % relative 3.9
5.0
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 1.8
2.2
Embodied Energy, MJ/kg 23
31
Embodied Water, L/kg 59
60

Common Calculations

PREN (Pitting Resistance) 5.6
2.8
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
110
Resilience: Unit (Modulus of Resilience), kJ/m3 420
3320
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 22
43
Strength to Weight: Bending, points 20
32
Thermal Diffusivity, mm2/s 11
12
Thermal Shock Resistance, points 18
36

Alloy Composition

Aluminum (Al), % 0.010 to 0.040
0
Carbon (C), % 0.1 to 0.15
0.28 to 0.38
Chromium (Cr), % 2.0 to 2.5
1.0 to 1.7
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 94.5 to 96.7
92.4 to 95.3
Manganese (Mn), % 0.3 to 0.8
0.15 to 0.4
Molybdenum (Mo), % 0.9 to 1.1
0.3 to 0.6
Nickel (Ni), % 0 to 0.3
2.9 to 3.8
Nitrogen (N), % 0 to 0.012
0
Phosphorus (P), % 0 to 0.015
0 to 0.035
Silicon (Si), % 0 to 0.3
0 to 0.4
Sulfur (S), % 0 to 0.010
0 to 0.035
Vanadium (V), % 0
0.080 to 0.25