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EN 1.4347 Stainless Steel vs. AISI 317 Stainless Steel

Both EN 1.4347 stainless steel and AISI 317 stainless steel are iron alloys. They have 90% of their average alloy composition in common. There are 31 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 1.4347 stainless steel and the bottom bar is AISI 317 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 23
35 to 55
Fatigue Strength, MPa 320
250 to 330
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 79
79
Tensile Strength: Ultimate (UTS), MPa 660
580 to 710
Tensile Strength: Yield (Proof), MPa 480
250 to 420

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Maximum Temperature: Corrosion, °C 450
420
Maximum Temperature: Mechanical, °C 1100
590
Melting Completion (Liquidus), °C 1410
1400
Melting Onset (Solidus), °C 1370
1380
Specific Heat Capacity, J/kg-K 490
470
Thermal Conductivity, W/m-K 15
15
Thermal Expansion, µm/m-K 13
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 16
21
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 3.1
4.3
Embodied Energy, MJ/kg 44
59
Embodied Water, L/kg 170
160

Common Calculations

PREN (Pitting Resistance) 28
31
Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
210 to 260
Resilience: Unit (Modulus of Resilience), kJ/m3 570
150 to 430
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 24
20 to 25
Strength to Weight: Bending, points 22
20 to 22
Thermal Diffusivity, mm2/s 4.0
4.1
Thermal Shock Resistance, points 19
12 to 15

Alloy Composition

Carbon (C), % 0 to 0.050
0 to 0.080
Chromium (Cr), % 25 to 27
18 to 20
Iron (Fe), % 62.2 to 69.4
58 to 68
Manganese (Mn), % 0 to 1.5
0 to 2.0
Molybdenum (Mo), % 0
3.0 to 4.0
Nickel (Ni), % 5.5 to 7.5
11 to 15
Nitrogen (N), % 0.1 to 0.2
0 to 0.1
Phosphorus (P), % 0 to 0.035
0 to 0.045
Silicon (Si), % 0 to 1.5
0 to 0.75
Sulfur (S), % 0 to 0.020
0 to 0.030