A 574 Grade 4140 (United States / ASTM) Material Properties

Material group: Ferrous Alloys / Structural and constructional steels
Country/Standard: United States / ASTM

Data updates

Latest Update: 2018-05
Total number of updates: 1
Update History:

Mechanical Properties

Temperature

0 - 30°C
PROPERTY / VALUE
Yield Strength, Rp0.2 1100 MPa view details
Tensile Strength 1220 MPa view details
Elongation, A 10 % view details
Rockwell Hardness (HR) val1
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Yield Strength, Rp0.2 159.5 ksi view details
Tensile Strength 176.9 ksi view details
Elongation, A 10 % view details
Rockwell Hardness (HR) val1
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view details

Physical Properties

Temperature

0 - 30°C
PROPERTY / VALUE
Modulus of Elasticity 190 — 210 GPa view details
Density 7.67 — 7.86 kg/dm³ view details
Poisson Coefficient 0.27 — 0.3 view details
Modulus of Elasticity 27.6 E+03 — 30.5 E+03 ksi view details
Density 0.277 — 0.284 lb/in³ view details
Poisson Coefficient 0.27 — 0.3 view details

Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
0.33 – 0.42
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
0.75 – 1.15
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Mn
VALUE
0.71 – 1.04
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

Alloy Steel Socket-Head Cap Screws, ASTM A574 / 2004

Heat Treatments

  • Screws shall be supplied heat treated by oil quenching from above the transformation temperature and then tempering at a temperature not lower than 345°C.