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SAE-AISI 1340 Steel vs. AISI 436 Stainless Steel

Both SAE-AISI 1340 steel and AISI 436 stainless steel are iron alloys. They have 81% 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 SAE-AISI 1340 steel and the bottom bar is AISI 436 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160 to 210
170
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 11 to 23
25
Fatigue Strength, MPa 220 to 390
190
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 72
77
Shear Strength, MPa 340 to 440
320
Tensile Strength: Ultimate (UTS), MPa 540 to 730
500
Tensile Strength: Yield (Proof), MPa 300 to 620
270

Thermal Properties

Latent Heat of Fusion, J/g 250
280
Maximum Temperature: Mechanical, °C 400
880
Melting Completion (Liquidus), °C 1450
1450
Melting Onset (Solidus), °C 1410
1410
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 51
25
Thermal Expansion, µm/m-K 12
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
2.8

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
12
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.4
2.7
Embodied Energy, MJ/kg 19
38
Embodied Water, L/kg 48
120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 78 to 110
110
Resilience: Unit (Modulus of Resilience), kJ/m3 240 to 1040
190
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 19 to 26
18
Strength to Weight: Bending, points 19 to 23
18
Thermal Diffusivity, mm2/s 14
6.7
Thermal Shock Resistance, points 17 to 23
18

Alloy Composition

Carbon (C), % 0.38 to 0.43
0 to 0.12
Chromium (Cr), % 0
16 to 18
Iron (Fe), % 97.2 to 97.9
77.8 to 83.3
Manganese (Mn), % 1.6 to 1.9
0 to 1.0
Molybdenum (Mo), % 0
0.75 to 1.3
Niobium (Nb), % 0
0 to 0.8
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0.15 to 0.35
0 to 1.0
Sulfur (S), % 0 to 0.040
0 to 0.030