MakeItFrom.com
Menu (ESC)

SAE-AISI 4340M Steel vs. S34565 Stainless Steel

Both SAE-AISI 4340M steel and S34565 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 52% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 4340M steel and the bottom bar is S34565 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 710
200
Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 6.0
39
Fatigue Strength, MPa 690
400
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 72
80
Shear Strength, MPa 1360
610
Tensile Strength: Ultimate (UTS), MPa 2340
900
Tensile Strength: Yield (Proof), MPa 1240
470

Thermal Properties

Latent Heat of Fusion, J/g 280
310
Maximum Temperature: Mechanical, °C 430
1100
Melting Completion (Liquidus), °C 1440
1420
Melting Onset (Solidus), °C 1400
1380
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 38
12
Thermal Expansion, µm/m-K 13
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.8
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 9.1
2.1

Otherwise Unclassified Properties

Base Metal Price, % relative 3.9
28
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 1.9
5.3
Embodied Energy, MJ/kg 26
73
Embodied Water, L/kg 55
210

Common Calculations

PREN (Pitting Resistance) 2.2
47
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
300
Resilience: Unit (Modulus of Resilience), kJ/m3 4120
540
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 84
32
Strength to Weight: Bending, points 51
26
Thermal Diffusivity, mm2/s 10
3.2
Thermal Shock Resistance, points 70
22

Alloy Composition

Carbon (C), % 0.38 to 0.43
0 to 0.030
Chromium (Cr), % 0.7 to 1.0
23 to 25
Iron (Fe), % 93.3 to 94.8
43.2 to 51.6
Manganese (Mn), % 0.65 to 0.9
5.0 to 7.0
Molybdenum (Mo), % 0.35 to 0.45
4.0 to 5.0
Nickel (Ni), % 1.7 to 2.0
16 to 18
Niobium (Nb), % 0
0 to 0.1
Nitrogen (N), % 0
0.4 to 0.6
Phosphorus (P), % 0 to 0.012
0 to 0.030
Silicon (Si), % 1.5 to 1.8
0 to 1.0
Sulfur (S), % 0 to 0.012
0 to 0.010
Vanadium (V), % 0.050 to 0.1
0