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EN 1.4941 Stainless Steel vs. EN 1.6956 Steel

Both EN 1.4941 stainless steel and EN 1.6956 steel are iron alloys. They have 75% 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 1.4941 stainless 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 200
190
Elongation at Break, % 39
9.6
Fatigue Strength, MPa 180
680
Impact Strength: V-Notched Charpy, J 98
25
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Shear Strength, MPa 400
730
Tensile Strength: Ultimate (UTS), MPa 590
1230
Tensile Strength: Yield (Proof), MPa 210
1120

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 940
440
Melting Completion (Liquidus), °C 1430
1460
Melting Onset (Solidus), °C 1380
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 16
46
Thermal Expansion, µm/m-K 16
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
8.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.8
9.1

Otherwise Unclassified Properties

Base Metal Price, % relative 16
5.0
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 3.3
2.2
Embodied Energy, MJ/kg 47
31
Embodied Water, L/kg 140
60

Common Calculations

PREN (Pitting Resistance) 18
2.8
Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
110
Resilience: Unit (Modulus of Resilience), kJ/m3 110
3320
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 21
43
Strength to Weight: Bending, points 20
32
Thermal Diffusivity, mm2/s 4.3
12
Thermal Shock Resistance, points 13
36

Alloy Composition

Boron (B), % 0.0015 to 0.0050
0
Carbon (C), % 0.040 to 0.080
0.28 to 0.38
Chromium (Cr), % 17 to 19
1.0 to 1.7
Iron (Fe), % 65.1 to 73.6
92.4 to 95.3
Manganese (Mn), % 0 to 2.0
0.15 to 0.4
Molybdenum (Mo), % 0
0.3 to 0.6
Nickel (Ni), % 9.0 to 12
2.9 to 3.8
Phosphorus (P), % 0 to 0.035
0 to 0.035
Silicon (Si), % 0 to 1.0
0 to 0.4
Sulfur (S), % 0 to 0.015
0 to 0.035
Titanium (Ti), % 0.4 to 0.8
0
Vanadium (V), % 0
0.080 to 0.25