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Half-hard AISI 201 vs. Half-hard AISI 304L

Both half-hard AISI 201 and half-hard AISI 304L are iron alloys. Both are furnished in the half-hard temper. They have a moderately high 92% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is half-hard AISI 201 and the bottom bar is half-hard AISI 304L.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 360
350
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 21
6.7
Fatigue Strength, MPa 550
430
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Shear Strength, MPa 740
680
Tensile Strength: Ultimate (UTS), MPa 1180
1160
Tensile Strength: Yield (Proof), MPa 850
870

Thermal Properties

Latent Heat of Fusion, J/g 280
290
Maximum Temperature: Corrosion, °C 410
420
Maximum Temperature: Mechanical, °C 880
540
Melting Completion (Liquidus), °C 1410
1450
Melting Onset (Solidus), °C 1370
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
16
Thermal Expansion, µm/m-K 17
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 12
16
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.6
3.1
Embodied Energy, MJ/kg 38
44
Embodied Water, L/kg 140
150

Common Calculations

PREN (Pitting Resistance) 19
20
Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
71
Resilience: Unit (Modulus of Resilience), kJ/m3 1840
1900
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 43
41
Strength to Weight: Bending, points 32
31
Thermal Diffusivity, mm2/s 4.0
4.2
Thermal Shock Resistance, points 26
25

Alloy Composition

Carbon (C), % 0 to 0.15
0 to 0.030
Chromium (Cr), % 16 to 18
18 to 20
Iron (Fe), % 67.5 to 75
65 to 74
Manganese (Mn), % 5.5 to 7.5
0 to 2.0
Nickel (Ni), % 3.5 to 5.5
8.0 to 12
Nitrogen (N), % 0 to 0.25
0 to 0.1
Phosphorus (P), % 0 to 0.060
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 0.75
Sulfur (S), % 0 to 0.030
0 to 0.030