Class 12 (European Union / EN) Material Properties

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

Data updates

Latest Update: 2022-12
Total number of updates: 1
Update History:

Mechanical Properties

Temperature

0 - 30°C
PROPERTY / VALUE
Yield Strength, Rp0.2 1200 MPa view details
Brinell Hardness (HB) 268 — 363 view details
Rockwell Hardness (HR) 27 — 39 view details
Vickers Hardness (HV) val1
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Yield Strength, Rp0.2 174 ksi view details
Brinell Hardness (HB) 268 — 363 view details
Rockwell Hardness (HR) 27 — 39 view details
Vickers Hardness (HV) val1
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Physical Properties

Temperature

0 - 30°C
PROPERTY / VALUE
Modulus of Elasticity 190 — 210 GPa view details
Density 7.67 — 7.86 kg/dm³ view details
Poisson Coefficient 0.27 — 0.3 view details
Modulus of Elasticity 27.6 E+03 — 30.5 E+03 ksi view details
Density 0.277 — 0.284 lb/in³ view details
Poisson Coefficient 0.27 — 0.3 view details

Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
≤ 0.58
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Mn
VALUE
≤ 0.48
UNIT
%
CAS NUMBER
7439-96-5
CRITERIA
P
VALUE
≤ 0.048
UNIT
%
CAS NUMBER
7723-14-0
CRITERIA
S
VALUE
val1
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UNIT
%
CAS NUMBER
7704-34-9

EN ISO 898-6: 1995 / Mechanical properties of fasteners - Part 6: Nuts with specified proof load values - Fine pitch thread

Heat Treatments

  • QT: tempering temperature > 410°C for Style 1 (M5 ≤ D ≤ M16), > 380°C for Style 2 (M5 ≤ D ≤ M39), for nuts with coarse pitch thread<br>QT: tempering temperature > 410°C for Style 2 (8 ≤ D ≤ 39 mm), for nuts with fine pitch thread