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ASTM Grade HF Steel vs. S39274 Stainless Steel

Both ASTM grade HF steel and S39274 stainless steel are iron alloys. They have 90% 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 ASTM grade HF steel and the bottom bar is S39274 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
270
Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 29
17
Fatigue Strength, MPa 200
380
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 77
81
Tensile Strength: Ultimate (UTS), MPa 550
900
Tensile Strength: Yield (Proof), MPa 270
620

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Maximum Temperature: Corrosion, °C 420
450
Maximum Temperature: Mechanical, °C 1000
1100
Melting Completion (Liquidus), °C 1410
1480
Melting Onset (Solidus), °C 1370
1430
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 16
16
Thermal Expansion, µm/m-K 16
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 17
24
Density, g/cm3 7.7
8.0
Embodied Carbon, kg CO2/kg material 3.2
4.3
Embodied Energy, MJ/kg 46
60
Embodied Water, L/kg 150
180

Common Calculations

PREN (Pitting Resistance) 21
43
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
140
Resilience: Unit (Modulus of Resilience), kJ/m3 180
940
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 20
32
Strength to Weight: Bending, points 19
26
Thermal Diffusivity, mm2/s 4.2
4.2
Thermal Shock Resistance, points 12
25

Alloy Composition

Carbon (C), % 0.2 to 0.4
0 to 0.030
Chromium (Cr), % 18 to 23
24 to 26
Copper (Cu), % 0
0.2 to 0.8
Iron (Fe), % 60 to 73.8
57 to 65.6
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 0 to 0.5
2.5 to 3.5
Nickel (Ni), % 8.0 to 12
6.0 to 8.0
Nitrogen (N), % 0
0.24 to 0.32
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 2.0
0 to 0.8
Sulfur (S), % 0 to 0.040
0 to 0.020
Tungsten (W), % 0
1.5 to 2.5