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AISI 317 Stainless Steel vs. ASTM Grade HH Steel

Both AISI 317 stainless steel and ASTM grade HH steel are iron alloys. They have a moderately high 92% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is AISI 317 stainless steel and the bottom bar is ASTM grade HH steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170 to 220
170
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 35 to 55
11
Fatigue Strength, MPa 250 to 330
150
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 79
79
Tensile Strength: Ultimate (UTS), MPa 580 to 710
580
Tensile Strength: Yield (Proof), MPa 250 to 420
270

Thermal Properties

Latent Heat of Fusion, J/g 290
310
Maximum Temperature: Corrosion, °C 420
440
Maximum Temperature: Mechanical, °C 590
1100
Melting Completion (Liquidus), °C 1400
1400
Melting Onset (Solidus), °C 1380
1360
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 15
14
Thermal Expansion, µm/m-K 17
17

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 21
20
Density, g/cm3 7.9
7.7
Embodied Carbon, kg CO2/kg material 4.3
3.7
Embodied Energy, MJ/kg 59
53
Embodied Water, L/kg 160
180

Common Calculations

PREN (Pitting Resistance) 31
27
Resilience: Ultimate (Unit Rupture Work), MJ/m3 210 to 260
53
Resilience: Unit (Modulus of Resilience), kJ/m3 150 to 430
190
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 20 to 25
21
Strength to Weight: Bending, points 20 to 22
20
Thermal Diffusivity, mm2/s 4.1
3.8
Thermal Shock Resistance, points 12 to 15
12

Alloy Composition

Carbon (C), % 0 to 0.080
0.2 to 0.5
Chromium (Cr), % 18 to 20
24 to 28
Iron (Fe), % 58 to 68
52.9 to 64.8
Manganese (Mn), % 0 to 2.0
0 to 2.0
Molybdenum (Mo), % 3.0 to 4.0
0 to 0.5
Nickel (Ni), % 11 to 15
11 to 14
Nitrogen (N), % 0 to 0.1
0
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 0.75
0 to 2.0
Sulfur (S), % 0 to 0.030
0 to 0.040