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EN 1.4634 Stainless Steel vs. AISI 317L Stainless Steel

Both EN 1.4634 stainless steel and AISI 317L stainless steel are iron alloys. Both are furnished in the annealed condition. They have 82% of their average alloy composition in common. There are 32 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 1.4634 stainless steel and the bottom bar is AISI 317L stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 21
44
Fatigue Strength, MPa 180
220
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
82
Shear Strength, MPa 340
380
Tensile Strength: Ultimate (UTS), MPa 540
550
Tensile Strength: Yield (Proof), MPa 280
250

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Corrosion, °C 500
420
Maximum Temperature: Mechanical, °C 900
1010
Melting Completion (Liquidus), °C 1430
1400
Melting Onset (Solidus), °C 1390
1380
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 21
14
Thermal Expansion, µm/m-K 10
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 3.0
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 13
21
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 2.9
4.3
Embodied Energy, MJ/kg 42
59
Embodied Water, L/kg 140
160

Common Calculations

PREN (Pitting Resistance) 19
31
Resilience: Ultimate (Unit Rupture Work), MJ/m3 93
200
Resilience: Unit (Modulus of Resilience), kJ/m3 200
150
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 20
19
Strength to Weight: Bending, points 19
19
Thermal Diffusivity, mm2/s 5.8
3.8
Thermal Shock Resistance, points 19
12

Alloy Composition

Aluminum (Al), % 0.2 to 1.5
0
Carbon (C), % 0 to 0.030
0 to 0.030
Chromium (Cr), % 17.5 to 18.5
18 to 20
Copper (Cu), % 0 to 0.5
0
Iron (Fe), % 74.9 to 81.8
58 to 68
Manganese (Mn), % 0 to 1.0
0 to 2.0
Molybdenum (Mo), % 0 to 0.5
3.0 to 4.0
Nickel (Ni), % 0 to 0.5
11 to 15
Niobium (Nb), % 0.3 to 1.0
0
Nitrogen (N), % 0
0 to 0.1
Phosphorus (P), % 0 to 0.050
0 to 0.045
Silicon (Si), % 0.2 to 1.5
0 to 0.75
Sulfur (S), % 0 to 0.050
0 to 0.030