MakeItFrom.com
Menu (ESC)

SAE-AISI 9255 Steel vs. AISI 317 Stainless Steel

Both SAE-AISI 9255 steel and AISI 317 stainless steel are iron alloys. They have 64% of their average alloy composition in common. There are 31 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 SAE-AISI 9255 steel and the bottom bar is AISI 317 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
170 to 220
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 21
35 to 55
Fatigue Strength, MPa 270
250 to 330
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 72
79
Shear Strength, MPa 430
420 to 470
Tensile Strength: Ultimate (UTS), MPa 680
580 to 710
Tensile Strength: Yield (Proof), MPa 390
250 to 420

Thermal Properties

Latent Heat of Fusion, J/g 280
290
Maximum Temperature: Mechanical, °C 400
590
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 46
15
Thermal Expansion, µm/m-K 13
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 2.0
21
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 1.5
4.3
Embodied Energy, MJ/kg 20
59
Embodied Water, L/kg 46
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
210 to 260
Resilience: Unit (Modulus of Resilience), kJ/m3 400
150 to 430
Stiffness to Weight: Axial, points 13
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 13
4.1
Thermal Shock Resistance, points 21
12 to 15

Alloy Composition

Carbon (C), % 0.51 to 0.59
0 to 0.080
Chromium (Cr), % 0
18 to 20
Iron (Fe), % 96.2 to 97
58 to 68
Manganese (Mn), % 0.7 to 1.0
0 to 2.0
Molybdenum (Mo), % 0
3.0 to 4.0
Nickel (Ni), % 0
11 to 15
Nitrogen (N), % 0
0 to 0.1
Phosphorus (P), % 0 to 0.035
0 to 0.045
Silicon (Si), % 1.8 to 2.2
0 to 0.75
Sulfur (S), % 0 to 0.040
0 to 0.030