ISO 20 NiCrMo 2 Structural and constructional steels

Material group: Ferrous Alloys / Structural and constructional steels
Country/Standard: International / ISO

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ISO 20 NiCrMo 2 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
0.17 – 0.23
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
0.30 – 0.65
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Mn
VALUE
0.65 – 0.95
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

Heat-treatable steels, alloy steels and free - cutting steels - Part 18: Bright products of unalloyed and low alloy steels, ISO 683-18 / 1996

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ISO 20 NiCrMo 2 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 676 properties — only a subset is shown here.

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ISO 20 NiCrMo 2 Heat Treatments

  • Carburizing: 880-980°C;Hardening: 820-860°C; Double hardening: 860-900°C (Core hardening) and 780-820°C (Case hardening); Tempering: 150-200°C (min. 1 hour).
  • Carburizing: 880-980°C;Hardening: 820-860°C; Double hardening: 860-900°C and 780-820°C; Tempering: 150-200°C (min. 1 hour). G+M - ground and treated to improve machinability G+TA - ground and annealed to maximum hardness requirements M+TC - treated to improve machinability and cold drawn P+M - peeled and treated to improve machinability P+TA - peeled and annealed to maximum hardness requirements TC+M - cold drawn and treated to improve machinability TC+TA - cold drawn and annealed to maximum hardness requirements.

ISO 20 NiCrMo 2 Mechanical Properties

Temperature

PROPERTY / VALUE
Yield Strength, Rp0.2
val1
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MPa
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Tensile Strength
660 — 1160 MPa
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Elongation, A
9 %
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Impact Energy
val1
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J
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Brinell Hardness (HB)
149 — 312
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  • 27 Composition
  • 40 Mechanical Properties
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  • 6 Heat Treatment
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