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AISI 305 Stainless Steel vs. ASTM Grade HP Steel

Both AISI 305 stainless steel and ASTM grade HP steel are iron alloys. They have 67% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is AISI 305 stainless steel and the bottom bar is ASTM grade HP steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170 to 220
140
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 34 to 45
5.1
Fatigue Strength, MPa 210 to 280
130
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
78
Tensile Strength: Ultimate (UTS), MPa 580 to 710
490
Tensile Strength: Yield (Proof), MPa 230 to 350
260

Thermal Properties

Latent Heat of Fusion, J/g 290
320
Maximum Temperature: Corrosion, °C 410
440
Maximum Temperature: Mechanical, °C 540
1100
Melting Completion (Liquidus), °C 1450
1370
Melting Onset (Solidus), °C 1400
1330
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 16
12
Thermal Expansion, µm/m-K 17
16

Otherwise Unclassified Properties

Base Metal Price, % relative 16
34
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 3.2
5.8
Embodied Energy, MJ/kg 45
82
Embodied Water, L/kg 150
220

Common Calculations

PREN (Pitting Resistance) 18
27
Resilience: Ultimate (Unit Rupture Work), MJ/m3 200 to 210
21
Resilience: Unit (Modulus of Resilience), kJ/m3 130 to 320
170
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 20 to 25
17
Strength to Weight: Bending, points 20 to 23
17
Thermal Diffusivity, mm2/s 4.2
3.2
Thermal Shock Resistance, points 13 to 15
11

Alloy Composition

Carbon (C), % 0 to 0.12
0.35 to 0.75
Chromium (Cr), % 17 to 19
24 to 28
Iron (Fe), % 65.1 to 72.5
29.2 to 42.7
Manganese (Mn), % 0 to 2.0
0 to 2.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 10.5 to 13
33 to 37
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 0.75
0 to 2.5
Sulfur (S), % 0 to 0.030
0 to 0.040