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EN 1.6958 Steel vs. AISI 317L Stainless Steel

Both EN 1.6958 steel and AISI 317L stainless steel are iron alloys. They have 69% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is EN 1.6958 steel and the bottom bar is AISI 317L stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 340
180
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 16
44
Fatigue Strength, MPa 700
220
Poisson's Ratio 0.29
0.28
Reduction in Area, % 56
56
Shear Modulus, GPa 73
82
Shear Strength, MPa 700
380
Tensile Strength: Ultimate (UTS), MPa 1140
550
Tensile Strength: Yield (Proof), MPa 1070
250

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Maximum Temperature: Mechanical, °C 450
1010
Melting Completion (Liquidus), °C 1460
1400
Melting Onset (Solidus), °C 1420
1380
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 47
14
Thermal Expansion, µm/m-K 11
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.9
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 9.1
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 5.0
21
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 2.0
4.3
Embodied Energy, MJ/kg 27
59
Embodied Water, L/kg 60
160

Common Calculations

PREN (Pitting Resistance) 2.9
31
Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
200
Resilience: Unit (Modulus of Resilience), kJ/m3 3050
150
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 40
19
Strength to Weight: Bending, points 31
19
Thermal Diffusivity, mm2/s 13
3.8
Thermal Shock Resistance, points 39
12

Alloy Composition

Aluminum (Al), % 0.0050 to 0.050
0
Carbon (C), % 0.25 to 0.3
0 to 0.030
Chromium (Cr), % 1.2 to 1.7
18 to 20
Iron (Fe), % 92.6 to 94.5
58 to 68
Manganese (Mn), % 0.2 to 0.5
0 to 2.0
Molybdenum (Mo), % 0.35 to 0.55
3.0 to 4.0
Nickel (Ni), % 3.3 to 3.8
11 to 15
Nitrogen (N), % 0
0 to 0.1
Phosphorus (P), % 0 to 0.020
0 to 0.045
Silicon (Si), % 0.15 to 0.3
0 to 0.75
Sulfur (S), % 0 to 0.015
0 to 0.030
Vanadium (V), % 0 to 0.12
0