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ASTM Grade HH Steel vs. S64512 Stainless Steel

Both ASTM grade HH steel and S64512 stainless steel are iron alloys. They have 74% 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 HH steel and the bottom bar is S64512 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170
330
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 11
17
Fatigue Strength, MPa 150
540
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 79
76
Tensile Strength: Ultimate (UTS), MPa 580
1140
Tensile Strength: Yield (Proof), MPa 270
890

Thermal Properties

Latent Heat of Fusion, J/g 310
270
Maximum Temperature: Corrosion, °C 440
390
Maximum Temperature: Mechanical, °C 1100
750
Melting Completion (Liquidus), °C 1400
1460
Melting Onset (Solidus), °C 1360
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 14
28
Thermal Expansion, µm/m-K 17
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
3.6
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
4.1

Otherwise Unclassified Properties

Base Metal Price, % relative 20
10
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 3.7
3.3
Embodied Energy, MJ/kg 53
47
Embodied Water, L/kg 180
110

Common Calculations

PREN (Pitting Resistance) 27
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 53
180
Resilience: Unit (Modulus of Resilience), kJ/m3 190
2020
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21
40
Strength to Weight: Bending, points 20
31
Thermal Diffusivity, mm2/s 3.8
7.5
Thermal Shock Resistance, points 12
42

Alloy Composition

Carbon (C), % 0.2 to 0.5
0.080 to 0.15
Chromium (Cr), % 24 to 28
11 to 12.5
Iron (Fe), % 52.9 to 64.8
80.6 to 84.7
Manganese (Mn), % 0 to 2.0
0.5 to 0.9
Molybdenum (Mo), % 0 to 0.5
1.5 to 2.0
Nickel (Ni), % 11 to 14
2.0 to 3.0
Nitrogen (N), % 0
0.010 to 0.050
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 2.0
0 to 0.35
Sulfur (S), % 0 to 0.040
0 to 0.025
Vanadium (V), % 0
0.25 to 0.4