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ASTM Grade HH Steel vs. AISI 316L Stainless Steel

Both ASTM grade HH steel and AISI 316L 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 HH steel and the bottom bar is AISI 316L stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170
170 to 350
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 11
9.0 to 50
Fatigue Strength, MPa 150
170 to 450
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 79
78
Tensile Strength: Ultimate (UTS), MPa 580
530 to 1160
Tensile Strength: Yield (Proof), MPa 270
190 to 870

Thermal Properties

Latent Heat of Fusion, J/g 310
290
Maximum Temperature: Corrosion, °C 440
410
Maximum Temperature: Mechanical, °C 1100
870
Melting Completion (Liquidus), °C 1400
1400
Melting Onset (Solidus), °C 1360
1380
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 14
15
Thermal Expansion, µm/m-K 17
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 20
19
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 3.7
3.9
Embodied Energy, MJ/kg 53
53
Embodied Water, L/kg 180
150

Common Calculations

PREN (Pitting Resistance) 27
26
Resilience: Ultimate (Unit Rupture Work), MJ/m3 53
77 to 230
Resilience: Unit (Modulus of Resilience), kJ/m3 190
93 to 1880
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21
19 to 41
Strength to Weight: Bending, points 20
18 to 31
Thermal Diffusivity, mm2/s 3.8
4.1
Thermal Shock Resistance, points 12
12 to 25

Alloy Composition

Carbon (C), % 0.2 to 0.5
0 to 0.030
Chromium (Cr), % 24 to 28
16 to 18
Iron (Fe), % 52.9 to 64.8
62 to 72
Manganese (Mn), % 0 to 2.0
0 to 2.0
Molybdenum (Mo), % 0 to 0.5
2.0 to 3.0
Nickel (Ni), % 11 to 14
10 to 14
Nitrogen (N), % 0
0 to 0.1
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 2.0
0 to 0.75
Sulfur (S), % 0 to 0.040
0 to 0.030