AFNOR NF 18CrNiMo7-6 Structural and constructional steels
Material group:
Ferrous Alloys / Structural and constructional steels
Country / Standard:
France / AFNOR NF
Indicative price:
Data updates
Latest Update: 2024-12
Total number of updates: 8
Update History
2023-12
2020-12
2019-06
2018-10
2018-09
2018-08
2018-05
This material has 319 properties — only a subset is shown here.
Unlock full material properties, including detailed values across temperatures and conditions.
View Complete Material Data ›
Free registration required • Instant access
Free registration required • Instant access
AFNOR NF 18CrNiMo7-6 Chemical Composition
CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
0.15 – 0.21
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
1.50 – 1.80
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Mn
VALUE
0.50 – 0.90
UNIT
%
CAS NUMBER
7439-96-5
CRITERIA
Mo
VALUE
val1
Full data available with free access
View Complete Material Data
UNIT
%
CAS NUMBER
7439-98-7
CRITERIA
Ni
VALUE
val1
Full data available with free access
View Complete Material Data
UNIT
%
CAS NUMBER
7440-02-0
CRITERIA
P
VALUE
val1
Full data available with free access
View Complete Material Data
UNIT
%
CAS NUMBER
7723-14-0
CRITERIA
S
VALUE
val1
Full data available with free access
View Complete Material Data
UNIT
%
CAS NUMBER
7704-34-9
CRITERIA
Si
VALUE
val1
Full data available with free access
View Complete Material Data
UNIT
%
CAS NUMBER
7440-21-3
EN 10084: 2008 / Case hardening steels - Technical delivery conditions
Looking for full material performance data?
View Complete Material Data ›
Free registration required • Instant access
Free registration required • Instant access
AFNOR NF 18CrNiMo7-6 Physical Properties
Temperature
Modulus of Elasticity
190 — 210
GPa
Unlock full details
Full data available with free access
View Complete Material Data
Electrical Resistivity
0.18
Ω∙mm²/m
Unlock full details
Full data available with free access
View Complete Material Data
Density
Unlock full details
Full data available with free access
View Complete Material Data
Electrical Conductivity
Unlock full details
Full data available with free access
View Complete Material Data
Heat Capacity
Unlock full details
Full data available with free access
View Complete Material Data
Thermal Conductivity
38
W/(m∙°C)
Unlock full details
Full data available with free access
View Complete Material Data
Poisson Coefficient
val1
Full data available with free access
View Complete Material Data
Unlock full details
Full data available with free access
View Complete Material Data
This material has 319 properties — only a subset is shown here.
Unlock detailed physical values across temperatures and conditions.
View Complete Material Data ›
Free registration required • Instant access
Free registration required • Instant access
AFNOR NF 18CrNiMo7-6 Heat Treatments
- End quench test austenitizing at 860 ± 5°C (Time for austenitizing as a guide: 30 min minimum);
Carburizing at 880-980°C (The carburizing temperature depends 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 1020-1050°C) are not unusual);
Direct and simple hardening at 810-850°C (The kind of quenching agent depends on, for example the shape of the products, the cooling conditions and the amount of furnace filling. If the steels are direct hardened and if there is a danger of distortion, they should be quenched from a temperature between the core-hardening and case-hardening temperatures);
Double hardening: Core-hardening at 830-870°C and Case-hardening at 780-820°C;
Tempering at 150-200°C (Time for tempering as a guide: 1h minimum). - End quench test: Quench from 860°C Carburizing: 880 to 980°C; NOTE: If steels are direct hardened, in general, a carburizing temperature of 950°C is not exceeded. For special procedures, for example under vacuum, higher temperatures (for example 1020 to 1050°C) are not unusual. Core hardening: 830 to 870°C; Case hardening: 780 to 820°C; Tempering: 150 to 200v (as a guide, for 1 hour minimum).
AFNOR NF 18CrNiMo7-6 Mechanical Properties
Temperature
Tensile Strength
≥ 800
MPa
Unlock full details
Full data available with free access
View Complete Material Data
Brinell Hardness (HB)
149 — 280
Unlock full details
Full data available with free access
View Complete Material Data
Grain Size
val1
Full data available with free access
View Complete Material Data
Unlock full details
Full data available with free access
View Complete Material Data
Need complete mechanical properties to make the right choice?
Get complete data on strength, hardness, fatigue, and more.
View Complete Material Data ›
Book A Demo
Free registration required • Instant access
Free registration required • Instant access
AFNOR NF 18CrNiMo7-6 International Equivalent Materials
Showing 15 of 96 results.
MATERIAL
STANDARD
COUNTRY / PRODUCER
EQUIVALENCE CATEGORY
Equivalence categories reflect chemical-composition and mechanical-property comparison — always verify suitability against the governing specification for your application.
Need the full list of 96 international equivalents?
See all 96 equivalent grades with detailed mapping by standard, producer and equivalence category.
View All Equivalents ›
Book A Demo
Free registration required • Instant access
Free registration required • Instant access
Optimize material selection for your application - Book A Demo
- 96Cross References
- 49Composition
- 46Mechanical Properties
- 14Physical Properties
- 11Heat Treatment
- 13Metallography
- -Machinability
- -Stress-Strain
- -Formability
- 5Fatigue
- -Fracture
- -Creep
- -Joints
- -Coatings
- 2Dimensions
- -Tribology
- -Corrosion
- -Ageing
- -Weatherability
- -Irradiation
- 83Total Suppliers