MakeItFrom.com
Menu (ESC)

AISI 403 Stainless Steel vs. ASTM A387 Grade 21L Class 1

Both AISI 403 stainless steel and ASTM A387 grade 21L class 1 are iron alloys. They have a moderately high 90% of their average alloy composition in common. There are 32 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 AISI 403 stainless steel and the bottom bar is ASTM A387 grade 21L class 1.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190 to 240
150
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 16 to 25
21
Fatigue Strength, MPa 200 to 340
160
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
74
Shear Strength, MPa 340 to 480
310
Tensile Strength: Ultimate (UTS), MPa 530 to 780
500
Tensile Strength: Yield (Proof), MPa 280 to 570
230

Thermal Properties

Latent Heat of Fusion, J/g 270
260
Maximum Temperature: Mechanical, °C 740
480
Melting Completion (Liquidus), °C 1450
1470
Melting Onset (Solidus), °C 1400
1430
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 28
41
Thermal Expansion, µm/m-K 9.9
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
8.8

Otherwise Unclassified Properties

Base Metal Price, % relative 6.5
4.1
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 1.9
1.8
Embodied Energy, MJ/kg 27
23
Embodied Water, L/kg 99
62

Common Calculations

PREN (Pitting Resistance) 12
6.4
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110 to 120
84
Resilience: Unit (Modulus of Resilience), kJ/m3 210 to 840
140
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 19 to 28
18
Strength to Weight: Bending, points 19 to 24
18
Thermal Diffusivity, mm2/s 7.6
11
Thermal Shock Resistance, points 20 to 29
14

Alloy Composition

Carbon (C), % 0 to 0.15
0 to 0.1
Chromium (Cr), % 11.5 to 13
2.8 to 3.3
Iron (Fe), % 84.7 to 88.5
94.4 to 96.1
Manganese (Mn), % 0 to 1.0
0.3 to 0.6
Molybdenum (Mo), % 0
0.9 to 1.1
Nickel (Ni), % 0 to 0.6
0
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 0.5
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.025