PROPRIETARY S7140/NAAMS Structural and constructional steels

Material group: Ferrous Alloys / Structural and constructional steels
Country / Standard: PROPRIETARY

Data updates

Latest Update: 2018-04
Total number of updates: 1
Update History

This material has 18 properties — only a subset is shown here.

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PROPRIETARY S7140/NAAMS Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
0.45 – 0.50
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
1.30 – 1.70
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Mn
VALUE
0.80 – 1.00
UNIT
%
CAS NUMBER
7439-96-5
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

Index for stamping dies cast materials, NAAMS Global Standard Components - Stamping, 2015

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PROPRIETARY S7140/NAAMS 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 18 properties — only a subset is shown here.

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PROPRIETARY S7140/NAAMS Heat Treatments


  • Castings can be delivered in the annealed or pre-hardened. Pre-hardened castings are typically used for trim steels weighing 20 kg or less.
    Annealed:
    Heat to 840-880°C and hold for a minimum of one hour plus one hour per 25mm of section thickness using maximum section thickness. Castings shall be furnace cooled to 560°C at a rate not to exceed 45°C per hour, then air cooled at room temperature.
    Pre-Hardened:
    Pre-Hardened: Heat to 840-880°C and hold 25 minutes at temperature. Quench with a cooling speed of 15°C per minute. Temper tool as soon as temperature reaches 50-70°C. Temper twice at 560-600°C.

PROPRIETARY S7140/NAAMS Mechanical Properties


Temperature

PROPERTY / VALUE
Tensile Strength
≥ 600 MPa
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Brinell Hardness (HB)
190 — 230
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Elongation, A
≥ 10 %
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Rockwell Hardness (HR)
val1
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Yield Strength, Rp0.2
val1
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MPa
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PROPRIETARY S7140/NAAMS International Equivalent Materials


Showing 2 of 2 results.

MATERIAL
STANDARD
COUNTRY / PRODUCER
EQUIVALENCE CATEGORY
MATERIAL
STANDARD
DIN
COUNTRY / PRODUCER
Germany
EQUIVALENCE CATEGORY
Composition 100%
MATERIAL
STANDARD
VDI
COUNTRY / PRODUCER
Germany
EQUIVALENCE CATEGORY
Composition 100%

Equivalence categories reflect chemical-composition and mechanical-property comparison — always verify suitability against the governing specification for your application.

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  • 2Cross References

  • 6Composition
  • 5Mechanical Properties
  • 3Physical Properties
  • 1Heat Treatment
  • -Metallography
  • -Machinability

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

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

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

  • 1Total Suppliers