MakeItFrom.com
Menu (ESC)

S31655 Stainless Steel vs. S40910 Stainless Steel

Both S31655 stainless steel and S40910 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 80% of their average alloy composition in common.

For each property being compared, the top bar is S31655 stainless steel and the bottom bar is S40910 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210
160
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 39
23
Fatigue Strength, MPa 300
130
Poisson's Ratio 0.28
0.28
Rockwell B Hardness 88
76
Shear Modulus, GPa 78
75
Shear Strength, MPa 490
270
Tensile Strength: Ultimate (UTS), MPa 710
430
Tensile Strength: Yield (Proof), MPa 350
190

Thermal Properties

Latent Heat of Fusion, J/g 290
270
Maximum Temperature: Corrosion, °C 430
440
Maximum Temperature: Mechanical, °C 1010
710
Melting Completion (Liquidus), °C 1430
1450
Melting Onset (Solidus), °C 1380
1410
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
26
Thermal Expansion, µm/m-K 16
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 17
7.0
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.3
2.0
Embodied Energy, MJ/kg 46
28
Embodied Water, L/kg 160
94

Common Calculations

PREN (Pitting Resistance) 27
11
Resilience: Ultimate (Unit Rupture Work), MJ/m3 230
80
Resilience: Unit (Modulus of Resilience), kJ/m3 310
94
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 25
16
Strength to Weight: Bending, points 23
16
Thermal Diffusivity, mm2/s 4.0
6.9
Thermal Shock Resistance, points 16
16

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.030
Chromium (Cr), % 19.5 to 21.5
10.5 to 11.7
Copper (Cu), % 0 to 1.0
0
Iron (Fe), % 63.2 to 71.9
85 to 89.5
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 0.5 to 1.5
0
Nickel (Ni), % 8.0 to 9.5
0 to 0.5
Niobium (Nb), % 0
0 to 0.17
Nitrogen (N), % 0.14 to 0.25
0 to 0.030
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.020
Titanium (Ti), % 0
0 to 0.5