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H925 Hardened S15500 Stainless Steel

H925 hardened S15500 stainless steel is S15500 stainless steel in the hardened (H) condition. It has the second highest strength and second lowest ductility compared to the other variants of S15500 stainless steel.

The graph bars on the material properties cards below compare H925 hardened S15500 stainless steel to: wrought precipitation-hardening stainless steels (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

Brinell Hardness

420

Elastic (Young's, Tensile) Modulus

190 GPa 28 x 106 psi

Elongation at Break

8.0 %

Fatigue Strength

610 MPa 89 x 103 psi

Impact Strength: V-Notched Charpy

7.8 J 5.7 ft-lb

Poisson's Ratio

0.28

Reduction in Area

22 %

Rockwell C Hardness

43

Shear Modulus

75 GPa 11 x 106 psi

Shear Strength

790 MPa 110 x 103 psi

Tensile Strength: Ultimate (UTS)

1330 MPa 190 x 103 psi

Tensile Strength: Yield (Proof)

1200 MPa 170 x 103 psi

Thermal Properties

Latent Heat of Fusion

280 J/g

Maximum Temperature: Corrosion

440 °C 830 °F

Maximum Temperature: Mechanical

820 °C 1510 °F

Melting Completion (Liquidus)

1430 °C 2600 °F

Melting Onset (Solidus)

1380 °C 2520 °F

Specific Heat Capacity

480 J/kg-K 0.11 BTU/lb-°F

Thermal Conductivity

17 W/m-K 9.8 BTU/h-ft-°F

Thermal Expansion

11 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

2.2 % IACS

Electrical Conductivity: Equal Weight (Specific)

2.5 % IACS

Otherwise Unclassified Properties

Base Metal Price

13 % relative

Density

7.8 g/cm3 490 lb/ft3

Embodied Carbon

2.7 kg CO2/kg material

Embodied Energy

39 MJ/kg 17 x 103 BTU/lb

Embodied Water

130 L/kg 15 gal/lb

Common Calculations

PREN (Pitting Resistance)

15

Resilience: Ultimate (Unit Rupture Work)

100 MJ/m3

Resilience: Unit (Modulus of Resilience)

3730 kJ/m3

Stiffness to Weight: Axial

14 points

Stiffness to Weight: Bending

25 points

Strength to Weight: Axial

47 points

Strength to Weight: Bending

34 points

Thermal Diffusivity

4.6 mm2/s

Thermal Shock Resistance

45 points

Alloy Composition

Iron (Fe)Fe 71.9 to 79.9
Chromium (Cr)Cr 14 to 15.5
Nickel (Ni)Ni 3.5 to 5.5
Copper (Cu)Cu 2.5 to 4.5
Manganese (Mn)Mn 0 to 1.0
Silicon (Si)Si 0 to 1.0
Niobium (Nb)Nb 0.15 to 0.45
Carbon (C)C 0 to 0.070
Phosphorus (P)P 0 to 0.040
Sulfur (S)S 0 to 0.030

All values are % weight. Ranges represent what is permitted under applicable standards.

Followup Questions

Further Reading

ASTM A564: Standard Specification for Hot-Rolled and Cold-Finished Age-Hardening Stainless Steel Bars and Shapes

Metallic Materials: Physical, Mechanical, and Corrosion Properties, Philip A. Schweitzer, 2003

Welding Metallurgy and Weldability of Stainless Steels, John C. Lippold and Damian J. Kotecki, 2005

ASTM A959: Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels

Corrosion of Stainless Steels, A. John Sedriks, 1996

ASM Specialty Handbook: Stainless Steels, J. R. Davis (editor), 1994

Advances in Stainless Steels, Baldev Raj et al. (editors), 2010