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ASTM Grade HP Steel vs. AISI 205 Stainless Steel

Both ASTM grade HP steel and AISI 205 stainless steel are iron alloys. They have 57% of their average alloy composition in common. There are 28 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 HP steel and the bottom bar is AISI 205 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
210 to 440
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 5.1
11 to 51
Fatigue Strength, MPa 130
410 to 640
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
77
Tensile Strength: Ultimate (UTS), MPa 490
800 to 1430
Tensile Strength: Yield (Proof), MPa 260
450 to 1100

Thermal Properties

Latent Heat of Fusion, J/g 320
280
Maximum Temperature: Corrosion, °C 440
410
Maximum Temperature: Mechanical, °C 1100
880
Melting Completion (Liquidus), °C 1370
1380
Melting Onset (Solidus), °C 1330
1340
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 16
18

Otherwise Unclassified Properties

Base Metal Price, % relative 34
11
Density, g/cm3 7.9
7.6
Embodied Carbon, kg CO2/kg material 5.8
2.6
Embodied Energy, MJ/kg 82
37
Embodied Water, L/kg 220
150

Common Calculations

PREN (Pitting Resistance) 27
23
Resilience: Ultimate (Unit Rupture Work), MJ/m3 21
150 to 430
Resilience: Unit (Modulus of Resilience), kJ/m3 170
510 to 3060
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
26
Strength to Weight: Axial, points 17
29 to 52
Strength to Weight: Bending, points 17
25 to 37
Thermal Shock Resistance, points 11
16 to 29

Alloy Composition

Carbon (C), % 0.35 to 0.75
0.12 to 0.25
Chromium (Cr), % 24 to 28
16.5 to 18.5
Iron (Fe), % 29.2 to 42.7
62.6 to 68.1
Manganese (Mn), % 0 to 2.0
14 to 15.5
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 33 to 37
1.0 to 1.7
Nitrogen (N), % 0
0.32 to 0.4
Phosphorus (P), % 0 to 0.040
0 to 0.060
Silicon (Si), % 0 to 2.5
0 to 1.0
Sulfur (S), % 0 to 0.040
0 to 0.030