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AISI 304 Stainless Steel vs. Full-hard AISI 301

Both AISI 304 stainless steel and full-hard AISI 301 are iron alloys. They have a very high 96% of their average alloy composition in common.

For each property being compared, the top bar is AISI 304 stainless steel and the bottom bar is full-hard AISI 301.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170 to 360
440
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 8.0 to 43
7.4
Fatigue Strength, MPa 210 to 440
540
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Shear Strength, MPa 400 to 690
860
Tensile Strength: Ultimate (UTS), MPa 580 to 1180
1460
Tensile Strength: Yield (Proof), MPa 230 to 860
1080

Thermal Properties

Latent Heat of Fusion, J/g 290
280
Maximum Temperature: Corrosion, °C 420
410
Maximum Temperature: Mechanical, °C 710
840
Melting Completion (Liquidus), °C 1450
1420
Melting Onset (Solidus), °C 1400
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 16
16
Thermal Expansion, µm/m-K 17
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 15
13
Calomel Potential, mV -80
-70
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.0
2.7
Embodied Energy, MJ/kg 43
39
Embodied Water, L/kg 150
130

Common Calculations

PREN (Pitting Resistance) 20
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 86 to 250
99
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 1870
2970
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21 to 42
52
Strength to Weight: Bending, points 20 to 32
37
Thermal Diffusivity, mm2/s 4.2
4.2
Thermal Shock Resistance, points 12 to 25
31

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.15
Chromium (Cr), % 18 to 20
16 to 18
Iron (Fe), % 66.5 to 74
70.7 to 78
Manganese (Mn), % 0 to 2.0
0 to 2.0
Nickel (Ni), % 8.0 to 10.5
6.0 to 8.0
Nitrogen (N), % 0 to 0.1
0 to 0.1
Phosphorus (P), % 0 to 0.045
0 to 0.045
Silicon (Si), % 0 to 0.75
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030