Half-Hard K94200 Alloy
Half-hard K94200 is K94200 alloy in the half-hard temper. The graph bars on the material properties cards below compare half-hard K94200 to: low-expansion iron alloys (top), all iron alloys (middle), and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.
Mechanical Properties
Elastic (Young's, Tensile) Modulus
140 GPa 21 x 106 psi
Elongation at Break
5.0 %
Poisson's Ratio
0.34
Shear Modulus
54 GPa 7.8 x 106 psi
Shear Strength
410 MPa 60 x 103 psi
Tensile Strength: Ultimate (UTS)
710 MPa 100 x 103 psi
Tensile Strength: Yield (Proof)
650 MPa 94 x 103 psi
Thermal Properties
Curie Temperature
350 °C 660 °F
Melting Onset (Solidus)
1440 °C 2620 °F
Specific Heat Capacity
500 J/kg-K 0.12 BTU/lb-°F
Thermal Conductivity
15 W/m-K 8.7 BTU/h-ft-°F
Thermal Expansion
5.0 µm/m-K
Other Material Properties
Density
8.2 g/cm3 510 lb/ft3
Electrical Conductivity: Equal Volume
2.7 % IACS
Electrical Conductivity: Equal Weight (Specific)
3.0 % IACS
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
35 MJ/m3
Resilience: Unit (Modulus of Resilience)
1460 kJ/m3
Stiffness to Weight: Axial
9.8 points
Stiffness to Weight: Bending
21 points
Strength to Weight: Axial
24 points
Strength to Weight: Bending
22 points
Thermal Diffusivity
3.7 mm2/s
Thermal Shock Resistance
70 points
Followup Questions
Further Reading
Properties and Selection: Irons, Steels and High Performance Alloys, ASM Handbook vol. 1, ASM International, 1993
Manufacture and Uses of Alloy Steels, Henry D. Hibbard, 2005