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EN 1.6956 Steel vs. EN 1.4951 Stainless Steel

Both EN 1.6956 steel and EN 1.4951 stainless steel are iron alloys. They have 58% 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 1.6956 steel and the bottom bar is EN 1.4951 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 370
170
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 9.6
38
Fatigue Strength, MPa 680
190
Impact Strength: V-Notched Charpy, J 25
98
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 73
79
Shear Strength, MPa 730
430
Tensile Strength: Ultimate (UTS), MPa 1230
630
Tensile Strength: Yield (Proof), MPa 1120
220

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Maximum Temperature: Mechanical, °C 440
1100
Melting Completion (Liquidus), °C 1460
1410
Melting Onset (Solidus), °C 1420
1360
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 46
15
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.0
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 9.1
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 5.0
25
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 2.2
4.3
Embodied Energy, MJ/kg 31
61
Embodied Water, L/kg 60
190

Common Calculations

PREN (Pitting Resistance) 2.8
26
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
190
Resilience: Unit (Modulus of Resilience), kJ/m3 3320
130
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 43
22
Strength to Weight: Bending, points 32
21
Thermal Diffusivity, mm2/s 12
3.9
Thermal Shock Resistance, points 36
14

Alloy Composition

Carbon (C), % 0.28 to 0.38
0.040 to 0.080
Chromium (Cr), % 1.0 to 1.7
24 to 26
Iron (Fe), % 92.4 to 95.3
49.1 to 57
Manganese (Mn), % 0.15 to 0.4
0 to 2.0
Molybdenum (Mo), % 0.3 to 0.6
0
Nickel (Ni), % 2.9 to 3.8
19 to 22
Nitrogen (N), % 0
0 to 0.1
Phosphorus (P), % 0 to 0.035
0 to 0.035
Silicon (Si), % 0 to 0.4
0 to 0.7
Sulfur (S), % 0 to 0.035
0 to 0.015
Vanadium (V), % 0.080 to 0.25
0