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AISI 317 Stainless Steel vs. AISI 304 Stainless Steel

Both AISI 317 stainless steel and AISI 304 stainless steel are iron alloys. They have a moderately high 93% 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 AISI 317 stainless steel and the bottom bar is AISI 304 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170 to 220
170 to 360
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 35 to 55
8.0 to 43
Fatigue Strength, MPa 250 to 330
210 to 440
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 79
77
Shear Strength, MPa 420 to 470
400 to 690
Tensile Strength: Ultimate (UTS), MPa 580 to 710
580 to 1180
Tensile Strength: Yield (Proof), MPa 250 to 420
230 to 860

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Corrosion, °C 420
420
Maximum Temperature: Mechanical, °C 590
710
Melting Completion (Liquidus), °C 1400
1450
Melting Onset (Solidus), °C 1380
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 15
16
Thermal Expansion, µm/m-K 17
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 21
15
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 4.3
3.0
Embodied Energy, MJ/kg 59
43
Embodied Water, L/kg 160
150

Common Calculations

PREN (Pitting Resistance) 31
20
Resilience: Ultimate (Unit Rupture Work), MJ/m3 210 to 260
86 to 250
Resilience: Unit (Modulus of Resilience), kJ/m3 150 to 430
140 to 1870
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 20 to 25
21 to 42
Strength to Weight: Bending, points 20 to 22
20 to 32
Thermal Diffusivity, mm2/s 4.1
4.2
Thermal Shock Resistance, points 12 to 15
12 to 25

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.080
Chromium (Cr), % 18 to 20
18 to 20
Iron (Fe), % 58 to 68
66.5 to 74
Manganese (Mn), % 0 to 2.0
0 to 2.0
Molybdenum (Mo), % 3.0 to 4.0
0
Nickel (Ni), % 11 to 15
8.0 to 10.5
Nitrogen (N), % 0 to 0.1
0 to 0.1
Phosphorus (P), % 0 to 0.045
0 to 0.045
Silicon (Si), % 0 to 0.75
0 to 0.75
Sulfur (S), % 0 to 0.030
0 to 0.030