SAE 6558 Structural and constructional steels

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

Data updates

Latest Update: 2013-11
Total number of updates: 1
Update History

This material has 25 properties — only a subset is shown here.

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SAE 6558 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
1.25 – 1.40
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Co
VALUE
≤ 1.00
UNIT
%
CAS NUMBER
7440-48-4
CRITERIA
Cr
VALUE
3.40 – 4.00
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Mn
VALUE
val1
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UNIT
%
CAS NUMBER
7439-96-5
CRITERIA
Mo
VALUE
val1
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UNIT
%
CAS NUMBER
7439-98-7
CRITERIA
N
VALUE
val1
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UNIT
%
CAS NUMBER
7727-37-9; 17778-88-0
CRITERIA
Ni
VALUE
val1
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UNIT
%
CAS NUMBER
7440-02-0
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
CRITERIA
V
VALUE
val1
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UNIT
%
CAS NUMBER
7440-62-2
CRITERIA
W
VALUE
val1
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UNIT
%
CAS NUMBER
7440-33-7

SAE AMS 6558A: 2018 / Steel, Bars, Wire, and Forgings 10.5 Mo - 6 W - 3.75 Cr - 2 V (1.25 - 1.40 C) Powder Metallurgy Product Hot Isostatically Pressed

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SAE 6558 Physical Properties


Temperature

PROPERTY / VALUE
Modulus of Elasticity
190 — 210 GPa
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Density
7.67 — 7.86 kg/dm³
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Poisson Coefficient
0.27 — 0.3
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This material has 25 properties — only a subset is shown here.

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SAE 6558 Heat Treatments


  • Heat treatment: Preheat in two steps at 450 to 500°C (842 to 932°F) and at 850 to 900°C (1562 to 1652°F), hold for one minute at each temperature, austenitize at 1190°C (2175°F), quench down to 100 to 120°F (38 to 49°C) or lower in air, temper three times at 560°C (1040°F) at least 1 hour at temperature each time, air cool to room temperature 25°C (77°F) between tempers.

SAE 6558 Mechanical Properties


Temperature

PROPERTY / VALUE
Tensile Strength
≤ 1220 MPa
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Brinell Hardness (HB)
≤ 360
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Rockwell Hardness (HR)
≥ 65
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SAE 6558 International Equivalent Materials


Showing 4 of 4 results.

MATERIAL
STANDARD
COUNTRY / PRODUCER
EQUIVALENCE CATEGORY
MATERIAL
STANDARD
UNS
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Official
MATERIAL
STANDARD
ASTM
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Implicit
MATERIAL
STANDARD
IRAM
COUNTRY / PRODUCER
Argentina
EQUIVALENCE CATEGORY
Implicit
MATERIAL
STANDARD
PROPRIETARY
COUNTRY / PRODUCER
EQUIVALENCE CATEGORY
Implicit

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  • 4Cross References

  • 12Composition
  • 4Mechanical Properties
  • 3Physical Properties
  • 1Heat Treatment
  • -Metallography
  • -Machinability

  • -Stress-Strain
  • -Formability
  • -Fatigue
  • -Fracture
  • -Creep

  • -Joints
  • -Coatings
  • -Dimensions
  • -Tribology

  • -Corrosion
  • -Ageing
  • -Weatherability
  • -Irradiation

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