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AISI 309H Stainless Steel vs. S39277 Stainless Steel

Both AISI 309H stainless steel and S39277 stainless steel are iron alloys. Both are furnished in the annealed condition. They have a moderately high 92% of their average alloy composition in common. There are 34 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is AISI 309H stainless steel and the bottom bar is S39277 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
250
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
28
Fatigue Strength, MPa 200
480
Poisson's Ratio 0.27
0.27
Reduction in Area, % 51
57
Shear Modulus, GPa 78
80
Shear Strength, MPa 400
600
Tensile Strength: Ultimate (UTS), MPa 580
930
Tensile Strength: Yield (Proof), MPa 230
660

Thermal Properties

Latent Heat of Fusion, J/g 290
300
Maximum Temperature: Corrosion, °C 440
450
Maximum Temperature: Mechanical, °C 1080
1100
Melting Completion (Liquidus), °C 1420
1460
Melting Onset (Solidus), °C 1370
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
16
Thermal Expansion, µm/m-K 16
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 19
23
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 3.6
4.2
Embodied Energy, MJ/kg 51
59
Embodied Water, L/kg 170
180

Common Calculations

PREN (Pitting Resistance) 23
43
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
240
Resilience: Unit (Modulus of Resilience), kJ/m3 130
1070
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21
33
Strength to Weight: Bending, points 20
27
Thermal Diffusivity, mm2/s 4.0
4.2
Thermal Shock Resistance, points 13
26

Alloy Composition

Carbon (C), % 0.040 to 0.1
0 to 0.025
Chromium (Cr), % 22 to 24
24 to 26
Copper (Cu), % 0
1.2 to 2.0
Iron (Fe), % 58.1 to 66
56.8 to 64.3
Manganese (Mn), % 0 to 2.0
0 to 0.8
Molybdenum (Mo), % 0
3.0 to 4.0
Nickel (Ni), % 12 to 15
6.5 to 8.0
Nitrogen (N), % 0
0.23 to 0.33
Phosphorus (P), % 0 to 0.045
0 to 0.025
Silicon (Si), % 0 to 0.75
0 to 0.8
Sulfur (S), % 0 to 0.030
0 to 0.0020
Tungsten (W), % 0
0.8 to 1.2