EN 30CrNiMo8 Structural and constructional steels

Material group: Ferrous Alloys / Structural and constructional steels
Country/Standard: European Union / EN

Data updates

Latest Update: 2025-03
Total number of updates: 11
Update History

This material has 848 properties — only a subset is shown here.

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EN 30CrNiMo8 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
0.26 – 0.34
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
1.80 – 2.20
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Mn
VALUE
0.30 – 0.60
UNIT
%
CAS NUMBER
7439-96-5
CRITERIA
Mo
VALUE
val1
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UNIT
%
CAS NUMBER
7439-98-7
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

EN 10083-1: 1991 / Quenched and tempered steels - Part 1: Technical delivery conditions for special steels (includes amendment A1:1996)

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EN 30CrNiMo8 Physical Properties

Temperature

PROPERTY / VALUE
Modulus of Elasticity
190 — 210 GPa
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Density
val1
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kg/dm³
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Poisson Coefficient
val1
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Thermal Conductivity
42 W/(m∙°C)
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Heat Capacity
val1
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J/(kg∙°C)
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Electrical Resistivity
0.19 Ω∙mm²/m
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Electrical Conductivity
val1
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S/m
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This material has 848 properties — only a subset is shown here.

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EN 30CrNiMo8 Heat Treatments

  • (+QT) Quenched: 830-860°C, cooled in water or oil; Tempered: 540-660°C.
  • Annealed (+A): 650-700°C Normalized (+N): 850-880°C Austenitized: 830-860°C Tempered: 540-680°C

EN 30CrNiMo8 Mechanical Properties

Temperature

PROPERTY / VALUE
Yield Strength, Rp0.2
val1
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MPa
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Tensile Strength
800 — 1691 MPa
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Elongation, A
8 %
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Reduction of Area
val1
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%
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Impact Energy
val1
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J
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Brinell Hardness (HB)
245
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Rockwell Hardness (HR)
val1
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Vickers Hardness (HV)
val1
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Grain Size
val1
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  • 142 Cross References
  • 84 Composition
  • 207 Mechanical Properties
  • 24 Physical Properties
  • 23 Heat Treatment
  • 6 Metallography
  • - Machinability
  • 4 Stress-Strain
  • - Formability
  • 12 Fatigue
  • - Fracture
  • - Creep
  • 1 Joints
  • - Coatings
  • 208 Dimensions
  • - Tribology
  • - Corrosion
  • - Ageing
  • - Weatherability
  • - Irradiation
  • 137 Total Suppliers