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S13800 Stainless Steel vs. SAE-AISI 4340M Steel

Both S13800 stainless steel and SAE-AISI 4340M steel are iron alloys. They have 79% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is S13800 stainless steel and the bottom bar is SAE-AISI 4340M steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 290 to 480
710
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 11 to 18
6.0
Fatigue Strength, MPa 410 to 870
690
Poisson's Ratio 0.28
0.29
Rockwell C Hardness 30 to 51
55
Shear Modulus, GPa 77
72
Shear Strength, MPa 610 to 1030
1360
Tensile Strength: Ultimate (UTS), MPa 980 to 1730
2340
Tensile Strength: Yield (Proof), MPa 660 to 1580
1240

Thermal Properties

Latent Heat of Fusion, J/g 280
280
Maximum Temperature: Mechanical, °C 810
430
Melting Completion (Liquidus), °C 1450
1440
Melting Onset (Solidus), °C 1410
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 16
38
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
7.8
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
9.1

Otherwise Unclassified Properties

Base Metal Price, % relative 15
3.9
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 3.4
1.9
Embodied Energy, MJ/kg 46
26
Embodied Water, L/kg 140
55

Common Calculations

PREN (Pitting Resistance) 21
2.2
Resilience: Ultimate (Unit Rupture Work), MJ/m3 150 to 190
120
Resilience: Unit (Modulus of Resilience), kJ/m3 1090 to 5490
4120
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 35 to 61
84
Strength to Weight: Bending, points 28 to 41
51
Thermal Diffusivity, mm2/s 4.3
10
Thermal Shock Resistance, points 33 to 58
70

Alloy Composition

Aluminum (Al), % 0.9 to 1.4
0
Carbon (C), % 0 to 0.050
0.38 to 0.43
Chromium (Cr), % 12.3 to 13.2
0.7 to 1.0
Iron (Fe), % 73.6 to 77.3
93.3 to 94.8
Manganese (Mn), % 0 to 0.2
0.65 to 0.9
Molybdenum (Mo), % 2.0 to 3.0
0.35 to 0.45
Nickel (Ni), % 7.5 to 8.5
1.7 to 2.0
Nitrogen (N), % 0 to 0.010
0
Phosphorus (P), % 0 to 0.010
0 to 0.012
Silicon (Si), % 0 to 0.1
1.5 to 1.8
Sulfur (S), % 0 to 0.0080
0 to 0.012
Vanadium (V), % 0
0.050 to 0.1