UNI 25 MnCr 6 Structural and constructional steels

Material group: Ferrous Alloys / Structural and constructional steels
Country / Standard: Italy / UNI
Indicative price:

Data updates

Latest Update: 2020-05
Total number of updates: 1
Update History

This material has 32 properties — only a subset is shown here.

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UNI 25 MnCr 6 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
0.20 – 0.29
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
0.30 – 0.60
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Mn
VALUE
1.20 – 1.60
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

UNI 6403: 1986 / Seamless steel tubes, intended and not intended for heat treatment, for use in road vehicles and for specific purposes

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UNI 25 MnCr 6 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 32 properties — only a subset is shown here.

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UNI 25 MnCr 6 Heat Treatments


  • Tube is manufactured from hot or cold rolled sheet, longitudinally welded which may be cold drawn. Tube shall be supplied in one of the following conditions: TC: Annealed. TD: Normalized. TF: Hardened and tempered Guideline Heat Treatment: Anneal at 680 to 700°C Normalize at 860 to 880°C. Harden by water quenching from 870-890°C and temper at 600-630°C.
  • Tube shall be either hot or cold finished. Tube shall be supplied in one of the following conditions: Hot Worked (HF). Annealed (TC). Normalized (TD). Anneal at 680 to 720°C Normalize at 850 to 880°C. Harden from 870 to 890°C by oil quenching and temper at 600 to 630°C.

UNI 25 MnCr 6 Mechanical Properties


Temperature

PROPERTY / VALUE
Tensile Strength
600 — 950 MPa
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Brinell Hardness (HB)
≤ 220
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Elongation, A
≥ 13 %
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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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  • -Cross References

  • 12Composition
  • 13Mechanical Properties
  • 3Physical Properties
  • 2Heat Treatment
  • -Metallography
  • -Machinability

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

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

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

  • 2Total Suppliers