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ASTM A387 Grade 21 Steel vs. K93600 Alloy

Both ASTM A387 grade 21 steel and K93600 alloy are iron alloys. There are 21 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is ASTM A387 grade 21 steel and the bottom bar is K93600 alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
140
Elongation at Break, % 21
5.0 to 35
Shear Strength, MPa 310 to 370
320 to 380
Tensile Strength: Ultimate (UTS), MPa 500 to 590
480 to 810
Tensile Strength: Yield (Proof), MPa 230 to 350
280 to 750

Thermal Properties

Maximum Temperature: Mechanical, °C 480
440
Melting Onset (Solidus), °C 1430
1430
Specific Heat Capacity, J/kg-K 470
520
Thermal Conductivity, W/m-K 41
13
Thermal Expansion, µm/m-K 13
7.3

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.8
2.4

Otherwise Unclassified Properties

Density, g/cm3 7.9
8.1

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 84 to 110
21 to 280
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 320
280 to 2050
Stiffness to Weight: Axial, points 13
9.4
Stiffness to Weight: Bending, points 24
21
Strength to Weight: Axial, points 18 to 21
16 to 28
Strength to Weight: Bending, points 18 to 20
17 to 24
Thermal Diffusivity, mm2/s 11
3.1
Thermal Shock Resistance, points 14 to 17
34 to 57

Comparable Variants