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H900 Hardened S15700 Stainless Steel

H900 hardened S15700 stainless steel is S15700 stainless steel in the hardened (H) condition. It has the highest strength compared to the other variants of S15700 stainless steel.

The graph bars on the material properties cards below compare H900 hardened S15700 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

Elastic (Young's, Tensile) Modulus

200 GPa 29 x 106 psi

Elongation at Break

1.1 %

Fatigue Strength

770 MPa 110 x 103 psi

Poisson's Ratio

0.28

Rockwell C Hardness

40

Shear Modulus

77 GPa 11 x 106 psi

Shear Strength

1070 MPa 160 x 103 psi

Tensile Strength: Ultimate (UTS)

1890 MPa 270 x 103 psi

Tensile Strength: Yield (Proof)

1770 MPa 260 x 103 psi

Thermal Properties

Latent Heat of Fusion

290 J/g

Maximum Temperature: Corrosion

400 °C 750 °F

Maximum Temperature: Mechanical

870 °C 1590 °F

Melting Completion (Liquidus)

1440 °C 2630 °F

Melting Onset (Solidus)

1400 °C 2550 °F

Specific Heat Capacity

480 J/kg-K 0.11 BTU/lb-°F

Thermal Conductivity

16 W/m-K 9.0 BTU/h-ft-°F

Thermal Expansion

11 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

2.3 % IACS

Electrical Conductivity: Equal Weight (Specific)

2.6 % IACS

Otherwise Unclassified Properties

Base Metal Price

15 % relative

Density

7.8 g/cm3 490 lb/ft3

Embodied Carbon

3.4 kg CO2/kg material

Embodied Energy

47 MJ/kg 20 x 103 BTU/lb

Embodied Water

140 L/kg 17 gal/lb

Common Calculations

PREN (Pitting Resistance)

23

Resilience: Ultimate (Unit Rupture Work)

21 MJ/m3

Stiffness to Weight: Axial

14 points

Stiffness to Weight: Bending

25 points

Strength to Weight: Axial

67 points

Strength to Weight: Bending

43 points

Thermal Diffusivity

4.2 mm2/s

Thermal Shock Resistance

63 points

Alloy Composition

Iron (Fe)Fe 69.6 to 76.8
Chromium (Cr)Cr 14 to 16
Nickel (Ni)Ni 6.5 to 7.7
Molybdenum (Mo)Mo 2.0 to 3.0
Aluminum (Al)Al 0.75 to 1.5
Manganese (Mn)Mn 0 to 1.0
Silicon (Si)Si 0 to 1.0
Carbon (C)C 0 to 0.090
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 A693: Standard Specification for Precipitation-Hardening Stainless and Heat-Resisting Steel Plate, Sheet, and Strip

Machining of Stainless Steels and Super Alloys: Traditional and Nontraditional Techniques, Helmi A. Youssef, 2016

Welding Metallurgy of Stainless Steels, Erich Folkhard et al., 2012

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

CRC Materials Science and Engineering Handbook, 4th ed., James F. Shackelford et al. (editors), 2015