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EN 1.6958 Steel vs. EN 1.7336 Steel

Both EN 1.6958 steel and EN 1.7336 steel are iron alloys. They have a very high 96% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is EN 1.6958 steel and the bottom bar is EN 1.7336 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 340
180
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 16
22
Fatigue Strength, MPa 700
240 to 310
Impact Strength: V-Notched Charpy, J 63
39 to 46
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 700
370
Tensile Strength: Ultimate (UTS), MPa 1140
590
Tensile Strength: Yield (Proof), MPa 1070
340 to 440

Thermal Properties

Latent Heat of Fusion, J/g 250
260
Maximum Temperature: Mechanical, °C 450
430
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
40
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.9
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 9.1
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 5.0
3.1
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 2.0
1.6
Embodied Energy, MJ/kg 27
21
Embodied Water, L/kg 60
53

Common Calculations

PREN (Pitting Resistance) 2.9
3.2
Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
110 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 3050
310 to 510
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 40
21
Strength to Weight: Bending, points 31
20
Thermal Diffusivity, mm2/s 13
11
Thermal Shock Resistance, points 39
17

Alloy Composition

Aluminum (Al), % 0.0050 to 0.050
0
Carbon (C), % 0.25 to 0.3
0 to 0.17
Chromium (Cr), % 1.2 to 1.7
1.0 to 1.5
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 92.6 to 94.5
95.6 to 97.7
Manganese (Mn), % 0.2 to 0.5
0.4 to 0.65
Molybdenum (Mo), % 0.35 to 0.55
0.45 to 0.65
Nickel (Ni), % 3.3 to 3.8
0 to 0.3
Nitrogen (N), % 0
0 to 0.012
Phosphorus (P), % 0 to 0.020
0 to 0.015
Silicon (Si), % 0.15 to 0.3
0.5 to 0.8
Sulfur (S), % 0 to 0.015
0 to 0.0050
Vanadium (V), % 0 to 0.12
0