21 NiCrMo 2 (Germany / DIN) Material Properties

Other designations:
Material group: Ferrous Alloys / Structural and constructional steels
Country/Standard: Germany / DIN

Data updates

Latest Update: 2019-06
Total number of updates: 2
Update History:
2015-04

Mechanical Properties

Temperature

0 - 30°C
PROPERTY / VALUE
Tensile Strength ≤ 820 MPa view details
Brinell Hardness (HB) 145 — 292 view details
Tensile Strength ≤ 118.9 ksi view details
Brinell Hardness (HB) 145 — 292 view details

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
0.1700 – 0.2300
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
0.3500 – 0.7000
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Mn
VALUE
0.6500 – 0.9500
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

DIN 1652-3: 1990 / Bright steel made from case hardening steel; technical delivery conditions

Heat Treatments

  • Blank hardening (cooling in oil): 880°C; End quench test: quench from 900°C Carburizing: 880-950°C; Core hardening: 860-900°C; Case hardening (cooling in oil): 800-840°C; Tempering: 150-200°C (as a guide, for 1 hour minimum)
  • Carburizing at 880 - 980°C. Core-hardening at 860 - 900°C, case hardening at 780 - 820°C, quenching. Tempering at 150 - 200°C.