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AISI 310 Stainless Steel vs. AISI 309HCb Stainless Steel

Both AISI 310 stainless steel and AISI 309HCb stainless steel are iron alloys. They have a moderately high 91% of their average alloy composition in common.

For each property being compared, the top bar is AISI 310 stainless steel and the bottom bar is AISI 309HCb stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180 to 220
190
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 34 to 45
46
Fatigue Strength, MPa 240 to 280
210
Poisson's Ratio 0.27
0.28
Rockwell B Hardness 82
82
Shear Modulus, GPa 78
78
Shear Strength, MPa 420 to 470
410
Tensile Strength: Ultimate (UTS), MPa 600 to 710
590
Tensile Strength: Yield (Proof), MPa 260 to 350
230

Thermal Properties

Latent Heat of Fusion, J/g 310
300
Maximum Temperature: Corrosion, °C 440
510
Maximum Temperature: Mechanical, °C 1040
1090
Melting Completion (Liquidus), °C 1450
1420
Melting Onset (Solidus), °C 1400
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
15
Thermal Expansion, µm/m-K 15
16

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 25
23
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 4.3
4.1
Embodied Energy, MJ/kg 61
59
Embodied Water, L/kg 190
170

Common Calculations

PREN (Pitting Resistance) 25
23
Resilience: Ultimate (Unit Rupture Work), MJ/m3 200 to 220
210
Resilience: Unit (Modulus of Resilience), kJ/m3 170 to 310
130
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21 to 25
21
Strength to Weight: Bending, points 20 to 22
20
Thermal Diffusivity, mm2/s 3.9
4.0
Thermal Shock Resistance, points 14 to 17
13

Alloy Composition

Carbon (C), % 0 to 0.25
0.040 to 0.1
Chromium (Cr), % 24 to 26
22 to 24
Iron (Fe), % 48.2 to 57
56 to 66
Manganese (Mn), % 0 to 2.0
0 to 2.0
Nickel (Ni), % 19 to 22
12 to 16
Niobium (Nb), % 0
0 to 1.1
Phosphorus (P), % 0 to 0.045
0 to 0.045
Silicon (Si), % 0 to 1.5
0 to 0.75
Sulfur (S), % 0 to 0.030
0 to 0.030