CSN 1.0721 Structural and constructional steels

Material group: Ferrous Alloys / Structural and constructional steels
Country / Standard: Czech Republic / CSN

Data updates

Latest Update: 2024-12
Total number of updates: 3
Update History
2018-08 2017-07

This material has 788 properties — only a subset is shown here.

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CSN 1.0721 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
0.07 – 0.13
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Mn
VALUE
0.70 – 1.10
UNIT
%
CAS NUMBER
7439-96-5
CRITERIA
Other
VALUE
Elements such as Te, Bi etc., may only be added by the manufacturer for improving machinability
UNIT
%
CAS NUMBER
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

EN 10087: 1998 / Free-cutting steels - Technical delivery conditions for semi-finished products, hot-rolled bars and rods

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CSN 1.0721 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 788 properties — only a subset is shown here.

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CSN 1.0721 Heat Treatments


  • Carburizing: 880-980°C. The carburizing temperature will depend on the chemical composition of the steel, the mass of the product, and the carburizing medium. If the steels are direct hardened, in general, a temperature of 950°C is not exceeded. For special procedures, for example under vacuum, higher temperatures (for example 1 020 to 1 050°C) are not unusual;
    Core-hardening: 880-920°C. When applying the single quench method, the steel is to be quenched from the carburizing temperature or a lower temperature. The lower hardening temperatures are in each case to be preferred, in particular when there is risk of distortion; Case-hardening: 780-820°C;
    Quenching agent: water, oil, emulsion. The kind of quenching agent depends on, for example, the shape of the products, the cooling conditions and the amount of furnace filling;
    Tempering: 150-200°C (1 h minimum).

CSN 1.0721 Mechanical Properties


Temperature

PROPERTY / VALUE
Tensile Strength
350 — 780 MPa
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Brinell Hardness (HB)
105 — 156
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Elongation, A
≥ 7 %
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Grain Size
val1
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Yield Strength, Rp0.2
val1
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MPa
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CSN 1.0721 International Equivalent Materials


Showing 15 of 400 results.

MATERIAL
STANDARD
COUNTRY / PRODUCER
EQUIVALENCE CATEGORY
MATERIAL
STANDARD
GB
COUNTRY / PRODUCER
China
EQUIVALENCE CATEGORY
Official
MATERIAL
STANDARD
ISO
COUNTRY / PRODUCER
International
EQUIVALENCE CATEGORY
Official
MATERIAL
STANDARD
JUS
COUNTRY / PRODUCER
Yugoslavia
EQUIVALENCE CATEGORY
Official
MATERIAL
STANDARD
IS
COUNTRY / PRODUCER
India
EQUIVALENCE CATEGORY
Official
MATERIAL
STANDARD
IS
COUNTRY / PRODUCER
India
EQUIVALENCE CATEGORY
Official
MATERIAL
STANDARD
IS
COUNTRY / PRODUCER
India
EQUIVALENCE CATEGORY
Official
MATERIAL
STANDARD
NBR
COUNTRY / PRODUCER
Brazil
EQUIVALENCE CATEGORY
Official
MATERIAL
STANDARD
B.S.
COUNTRY / PRODUCER
United Kingdom
EQUIVALENCE CATEGORY
Implicit
MATERIAL
STANDARD
B.S.
COUNTRY / PRODUCER
United Kingdom
EQUIVALENCE CATEGORY
Implicit
MATERIAL
STANDARD
B.S.
COUNTRY / PRODUCER
United Kingdom
EQUIVALENCE CATEGORY
Implicit
MATERIAL
STANDARD
GB
COUNTRY / PRODUCER
China
EQUIVALENCE CATEGORY
Official
MATERIAL
STANDARD
IRAM
COUNTRY / PRODUCER
Argentina
EQUIVALENCE CATEGORY
Official
MATERIAL
STANDARD
IS
COUNTRY / PRODUCER
India
EQUIVALENCE CATEGORY
Official
MATERIAL
STANDARD
PROPRIETARY
COUNTRY / PRODUCER
EQUIVALENCE CATEGORY
Composition 100%
MATERIAL
STANDARD
TCVN
COUNTRY / PRODUCER
Vietnam
EQUIVALENCE CATEGORY
Official

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

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  • 400Cross References

  • 21Composition
  • 71Mechanical Properties
  • 3Physical Properties
  • 1Heat Treatment
  • -Metallography
  • -Machinability

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

  • -Joints
  • -Coatings
  • 2Dimensions
  • -Tribology

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

  • 290Total Suppliers