51440C (United States / SAE) Material Properties

Material group: Ferrous Alloys / Stainless steels
Country/Standard: United States / SAE

Data updates

Latest Update: 2025-02
Total number of updates: 1
Update History:

Mechanical Properties

Temperature

0 - 30°C
PROPERTY / VALUE
Tensile Strength ≤ 931 MPa view details
Brinell Hardness (HB) ≤ 285 view details
Rockwell Hardness (HR) 55 — 64 view details
Grain Size val1
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Tensile Strength ≤ 135 ksi view details
Brinell Hardness (HB) ≤ 285 view details
Rockwell Hardness (HR) 55 — 64 view details
Grain Size val1
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Physical Properties

Temperature

0 - 30°C
PROPERTY / VALUE
Modulus of Elasticity 190 — 215 GPa view details
Density 7.61 — 8.1 kg/dm³ view details
Poisson Coefficient 0.27 — 0.3 view details
Modulus of Elasticity 27.6 E+03 — 31.2 E+03 ksi view details
Density 0.275 — 0.293 lb/in³ view details
Poisson Coefficient 0.27 — 0.3 view details

Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
0.95 – 1.20
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
16.0 – 18.0
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Mn
VALUE
≤ 1.00
UNIT
%
CAS NUMBER
7439-96-5
CRITERIA
Mo
VALUE
val1
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UNIT
%
CAS NUMBER
7439-98-7
CRITERIA
P
VALUE
val1
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UNIT
%
CAS NUMBER
7723-14-0
CRITERIA
S
VALUE
val1
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UNIT
%
CAS NUMBER
7704-34-9
CRITERIA
Si
VALUE
val1
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UNIT
%
CAS NUMBER
7440-21-3

SAE AMS-QQ-S-763D: 2013 / Steel, Corrosion Resistant, Bars, Wire, Shapes and Forgings

Heat Treatments

  • Heated to 1052 °C ± 14 °C (1925 °F ± 25 °F), held at heat for 30 minutes ± 3 minutes, and quenched in oil. After heat treatment, sub-zero cooling to -68°C (-90°F), or colder for not less than 2 hours and warming in air to room temperature, after heating is optional.
  • Response to heat treatment: heat to 1052°C +/-14°C, held at heat for 30 minutes +/-3 and quenched in oil. Sub-zero cool to -73°C +/-11°C, hold at that temperature for 2 hours +/-25 minutes, and warm in air to room temperature (sub-zero cool is optional after heat treatment).