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S30415 Stainless Steel vs. AISI 309HCb Stainless Steel

Both S30415 stainless steel and AISI 309HCb stainless steel are iron alloys. Both are furnished in the annealed condition. They have 90% of their average alloy composition in common.

For each property being compared, the top bar is S30415 stainless steel and the bottom bar is AISI 309HCb stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
190
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 45
46
Fatigue Strength, MPa 300
210
Poisson's Ratio 0.28
0.28
Rockwell B Hardness 84
82
Shear Modulus, GPa 77
78
Shear Strength, MPa 470
410
Tensile Strength: Ultimate (UTS), MPa 670
590
Tensile Strength: Yield (Proof), MPa 330
230

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Maximum Temperature: Corrosion, °C 420
510
Maximum Temperature: Mechanical, °C 940
1090
Melting Completion (Liquidus), °C 1410
1420
Melting Onset (Solidus), °C 1370
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 21
15
Thermal Expansion, µm/m-K 17
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 15
23
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 3.1
4.1
Embodied Energy, MJ/kg 43
59
Embodied Water, L/kg 140
170

Common Calculations

PREN (Pitting Resistance) 21
23
Resilience: Ultimate (Unit Rupture Work), MJ/m3 250
210
Resilience: Unit (Modulus of Resilience), kJ/m3 280
130
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 24
21
Strength to Weight: Bending, points 22
20
Thermal Diffusivity, mm2/s 5.6
4.0
Thermal Shock Resistance, points 15
13

Alloy Composition

Carbon (C), % 0.040 to 0.060
0.040 to 0.1
Cerium (Ce), % 0.030 to 0.080
0
Chromium (Cr), % 18 to 19
22 to 24
Iron (Fe), % 67.8 to 71.8
56 to 66
Manganese (Mn), % 0 to 0.8
0 to 2.0
Nickel (Ni), % 9.0 to 10
12 to 16
Niobium (Nb), % 0
0 to 1.1
Nitrogen (N), % 0.12 to 0.18
0
Phosphorus (P), % 0 to 0.045
0 to 0.045
Silicon (Si), % 1.0 to 2.0
0 to 0.75
Sulfur (S), % 0 to 0.030
0 to 0.030