MakeItFrom.com
Menu (ESC)

EN 1.6957 Steel vs. EN 1.6920 Steel

Both EN 1.6957 steel and EN 1.6920 steel are iron alloys. Both are furnished in the quenched and tempered condition. They have a very high 96% of their average alloy composition in common. There are 32 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 EN 1.6957 steel and the bottom bar is EN 1.6920 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 280
190
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 18
19
Fatigue Strength, MPa 530
290
Impact Strength: V-Notched Charpy, J 71
45
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 570
400
Tensile Strength: Ultimate (UTS), MPa 930
640
Tensile Strength: Yield (Proof), MPa 780
420

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 450
420
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 47
39
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.9
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 9.1
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 5.0
2.8
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 2.1
1.7
Embodied Energy, MJ/kg 29
23
Embodied Water, L/kg 60
52

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 160
110
Resilience: Unit (Modulus of Resilience), kJ/m3 1630
470
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 33
22
Strength to Weight: Bending, points 27
21
Thermal Diffusivity, mm2/s 13
10
Thermal Shock Resistance, points 27
19

Alloy Composition

Carbon (C), % 0.22 to 0.32
0 to 0.17
Chromium (Cr), % 1.2 to 1.8
0.5 to 1.0
Iron (Fe), % 92.7 to 94.7
95.7 to 98
Manganese (Mn), % 0.15 to 0.4
1.0 to 1.5
Molybdenum (Mo), % 0.25 to 0.45
0.2 to 0.35
Nickel (Ni), % 3.4 to 4.0
0.3 to 0.7
Phosphorus (P), % 0 to 0.010
0 to 0.025
Silicon (Si), % 0 to 0.15
0 to 0.4
Sulfur (S), % 0 to 0.0070
0 to 0.015
Vanadium (V), % 0.050 to 0.15
0.050 to 0.1