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AISI 312 Stainless Steel vs. ASTM Grade HF Steel

Both AISI 312 stainless steel and ASTM grade HF steel are iron alloys. They have a moderately high 94% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is AISI 312 stainless steel and the bottom bar is ASTM grade HF steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 250
160
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 28
29
Fatigue Strength, MPa 370
200
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 80
77
Tensile Strength: Ultimate (UTS), MPa 780
550
Tensile Strength: Yield (Proof), MPa 510
270

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Maximum Temperature: Corrosion, °C 450
420
Maximum Temperature: Mechanical, °C 1100
1000
Melting Completion (Liquidus), °C 1430
1410
Melting Onset (Solidus), °C 1390
1370
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 16
16
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 17
17
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 3.4
3.2
Embodied Energy, MJ/kg 48
46
Embodied Water, L/kg 170
150

Common Calculations

PREN (Pitting Resistance) 33
21
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
130
Resilience: Unit (Modulus of Resilience), kJ/m3 640
180
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 28
20
Strength to Weight: Bending, points 24
19
Thermal Diffusivity, mm2/s 4.3
4.2
Thermal Shock Resistance, points 21
12

Alloy Composition

Carbon (C), % 0 to 0.030
0.2 to 0.4
Chromium (Cr), % 24 to 26
18 to 23
Iron (Fe), % 62.2 to 69.2
60 to 73.8
Manganese (Mn), % 0 to 2.0
0 to 2.0
Molybdenum (Mo), % 1.2 to 2.0
0 to 0.5
Nickel (Ni), % 5.5 to 6.5
8.0 to 12
Nitrogen (N), % 0.14 to 0.2
0
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 2.0
Sulfur (S), % 0 to 0.030
0 to 0.040