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EN 1.4941 Stainless Steel vs. EN 1.4317 Stainless Steel

Both EN 1.4941 stainless steel and EN 1.4317 stainless steel are iron alloys. They have 87% 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 1.4941 stainless steel and the bottom bar is EN 1.4317 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 39
17
Fatigue Strength, MPa 180
380
Impact Strength: V-Notched Charpy, J 98
56
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
76
Tensile Strength: Ultimate (UTS), MPa 590
860
Tensile Strength: Yield (Proof), MPa 210
630

Thermal Properties

Latent Heat of Fusion, J/g 290
280
Maximum Temperature: Corrosion, °C 520
390
Maximum Temperature: Mechanical, °C 940
770
Melting Completion (Liquidus), °C 1430
1440
Melting Onset (Solidus), °C 1380
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 16
26
Thermal Expansion, µm/m-K 16
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.8
3.2

Otherwise Unclassified Properties

Base Metal Price, % relative 16
10
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.3
2.4
Embodied Energy, MJ/kg 47
33
Embodied Water, L/kg 140
110

Common Calculations

PREN (Pitting Resistance) 18
14
Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
130
Resilience: Unit (Modulus of Resilience), kJ/m3 110
1010
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21
31
Strength to Weight: Bending, points 20
26
Thermal Diffusivity, mm2/s 4.3
7.0
Thermal Shock Resistance, points 13
30

Alloy Composition

Boron (B), % 0.0015 to 0.0050
0
Carbon (C), % 0.040 to 0.080
0 to 0.060
Chromium (Cr), % 17 to 19
12 to 13.5
Iron (Fe), % 65.1 to 73.6
78.7 to 84.5
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 0
0 to 0.7
Nickel (Ni), % 9.0 to 12
3.5 to 5.0
Phosphorus (P), % 0 to 0.035
0 to 0.035
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.025
Titanium (Ti), % 0.4 to 0.8
0