UNI 36 CrMn 4 Structural and constructional steels

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

Data updates

Latest Update: 2021-04
Total number of updates: 1
Update History

This material has 118 properties — only a subset is shown here.

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UNI 36 CrMn 4 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
0.33 – 0.39
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
0.90 – 1.20
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Mn
VALUE
0.80 – 1.10
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 7847: 1979 / Hot rolled, unalloyed and alloyed special steel products, bars and coils, for surface hardening. Qualities, requirements and tests

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UNI 36 CrMn 4 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 118 properties — only a subset is shown here.

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UNI 36 CrMn 4 Heat Treatments


  • Material is normally supplied in the hot rolled condition but, subject to agreement, may be supplied in one of the following conditions: Soft Annealed (SA) to a maximum hardness by annealing at 680 - 720°C. Spheroidise Annealed (Spheroidised). Annealed to obtain a ferritic/pearlite structure (Annealed). Hardened and Tempered (H+T). The H+T values shown in the mechanical properties table are obtained from a test piece hardened by oil quenching from 840 - 860°C followed by tempering at 550 - 650°C for at least 1 hour. The temperature of the oil must be between 15 - 60°C. The Rockwell C Scale hardness minimum value (Heat Treated condition) shown in the mechanical properties table is the surface hardness which must be obtained whether material is in the normalised condition and subsequently surface hardened or whether the material is in the hardened and tempered condition and subsequently surface hardened; Both treatments are followed by tempering at 140-180°C for approximately 1 hour. The specification gives a normalising treatment of 860 - 890°C.

UNI 36 CrMn 4 Mechanical Properties


Temperature

PROPERTY / VALUE
Tensile Strength
880 — 1080 MPa
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Brinell Hardness (HB)
170 — 230
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Elongation, A
≥ 12 %
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Impact Energy
val1
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J
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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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UNI 36 CrMn 4 International Equivalent Materials


Showing 15 of 54 results.

MATERIAL
STANDARD
COUNTRY / PRODUCER
EQUIVALENCE CATEGORY
MATERIAL
STANDARD
PROPRIETARY
COUNTRY / PRODUCER
EQUIVALENCE CATEGORY
Composition 100%
MATERIAL
STANDARD
B.S.
COUNTRY / PRODUCER
United Kingdom
EQUIVALENCE CATEGORY
Implicit
MATERIAL
STANDARD
DIN
COUNTRY / PRODUCER
Germany
EQUIVALENCE CATEGORY
Implicit
MATERIAL
STANDARD
AFNOR NF
COUNTRY / PRODUCER
France
EQUIVALENCE CATEGORY
Implicit
MATERIAL
STANDARD
DIN
COUNTRY / PRODUCER
Germany
EQUIVALENCE CATEGORY
Implicit
MATERIAL
STANDARD
EN
COUNTRY / PRODUCER
European Union
EQUIVALENCE CATEGORY
Implicit
MATERIAL
STANDARD
EN
COUNTRY / PRODUCER
European Union
EQUIVALENCE CATEGORY
Implicit
MATERIAL
STANDARD
AFNOR NF
COUNTRY / PRODUCER
France
EQUIVALENCE CATEGORY
Implicit
MATERIAL
STANDARD
JIS
COUNTRY / PRODUCER
Japan
EQUIVALENCE CATEGORY
Implicit
MATERIAL
STANDARD
NBN
COUNTRY / PRODUCER
Belgium
EQUIVALENCE CATEGORY
Implicit
MATERIAL
STANDARD
NS
COUNTRY / PRODUCER
Norway
EQUIVALENCE CATEGORY
Implicit
MATERIAL
STANDARD
SAE
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Implicit
MATERIAL
STANDARD
UNE
COUNTRY / PRODUCER
Spain
EQUIVALENCE CATEGORY
Implicit
MATERIAL
STANDARD
UNS
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Implicit
MATERIAL
STANDARD
UNS
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Implicit

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

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  • 54Cross References

  • 6Composition
  • 8Mechanical Properties
  • 3Physical Properties
  • 1Heat Treatment
  • -Metallography
  • -Machinability

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

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

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

  • 46Total Suppliers