1.7378 (Germany / DIN) Material Properties

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

Data updates

Latest Update: 2022-04
Total number of updates: 5
Update History:
2021-09 2020-03 2016-02 2014-02

Mechanical Properties

Temperature

0 - 30°C
30 - 100°C
100 - 300°C
≥ 300°C
PROPERTY / VALUE
Yield Strength, Rp0.2 430 MPa view details
Yield Strength, Rp0.2 val1
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MPa view details
Yield Strength, Rp0.2 val1
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MPa view details
Yield Strength, Rp0.2 val1
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MPa view details
Tensile Strength 565 — 840 MPa view details
Tensile Strength val1
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MPa view details
Tensile Strength val1
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MPa view details
Tensile Strength val1
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MPa view details
Elongation, A 15 % view details
Impact Energy val1
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J view details
Vickers Hardness (HV) val1
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Yield Strength, Rp0.2 62.4 ksi view details
Yield Strength, Rp0.2 val1
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ksi view details
Yield Strength, Rp0.2 val1
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ksi view details
Yield Strength, Rp0.2 val1
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ksi view details
Tensile Strength 81.9 — 121.8 ksi view details
Tensile Strength val1
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ksi view details
Tensile Strength val1
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ksi view details
Tensile Strength val1
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ksi view details
Elongation, A 15 % view details
Impact Energy val1
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ft·lb view details
Vickers Hardness (HV) val1
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Physical Properties

Temperature

0 - 30°C
30 - 100°C
100 - 300°C
≥ 300°C
PROPERTY / VALUE
Modulus of Elasticity 190 — 210 GPa view details
Dynamic Modulus of Elasticity 211 GPa view details
Dynamic Modulus of Elasticity val1
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GPa view details
Dynamic Modulus of Elasticity val1
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GPa view details
Dynamic Modulus of Elasticity val1
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GPa view details
Density 7.67 — 7.86 kg/dm³ view details
Poisson Coefficient val1
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Coefficient of Thermal Expansion (CTE) val1
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10-6/°C view details
Coefficient of Thermal Expansion (CTE) val1
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10-6/°C view details
Coefficient of Thermal Expansion (CTE) val1
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10-6/°C view details
Modulus of Elasticity 27.6 E+03 — 30.5 E+03 ksi view details
Dynamic Modulus of Elasticity 30.6 E+03 ksi view details
Dynamic Modulus of Elasticity val1
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ksi view details
Dynamic Modulus of Elasticity val1
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ksi view details
Dynamic Modulus of Elasticity val1
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ksi view details
Density 0.277 — 0.284 lb/in³ view details
Poisson Coefficient val1
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view details
Coefficient of Thermal Expansion (CTE) val1
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10-6/°F view details
Coefficient of Thermal Expansion (CTE) val1
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10-6/°F view details
Coefficient of Thermal Expansion (CTE) val1
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10-6/°F view details

Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
Al
VALUE
≤ 0.020
UNIT
%
CAS NUMBER
7429-90-5
CRITERIA
B
VALUE
0.0015 – 0.0070
UNIT
%
CAS NUMBER
7440-42-8
CRITERIA
C
VALUE
0.05 – 0.10
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
val1
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UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Mn
VALUE
val1
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UNIT
%
CAS NUMBER
7439-96-5
CRITERIA
Mo
VALUE
val1
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UNIT
%
CAS NUMBER
7439-98-7
CRITERIA
N
VALUE
val1
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UNIT
%
CAS NUMBER
7727-37-9; 17778-88-0
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
CRITERIA
Ti
VALUE
val1
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UNIT
%
CAS NUMBER
7440-32-6
CRITERIA
V
VALUE
val1
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UNIT
%
CAS NUMBER
7440-62-2

WB 533/2: 2013 / Heat-resistant 7CrMoVTiB10-10 steel, material No.1.7378; Seamless hollow body, seamless pipe

Heat Treatments

  • Quenching and tempering:<br />Hardening: 980-1020°C, quenching in water;<br />Tempering: 740-770°C, holding period 2 minutes/mm thickness, at least 60 minutes (Holding time starts when the temperature in the cross section is reached) and cooling in air;<br /><br />Stress relieving after welding: 740 ± 10°C, holding period 2 minutes/mm thickness, at least 60 minutes and cooling in air;<br /><br />Stress relieving after cold forming: 650-750°C, holding period 2 minutes/mm thickness, at least 60 minutes and cooling in air.
  • Quenching and tempering:<br />Hardening: 980-1020°C, cooling in air for wt ≤ 16 mm, quenching in water for wt > 16 mm;<br />Tempering: 730-760°C, holding period 2 minutes/mm thickness, at least 60 minutes and cooling in air;<br /><br />Stress relieving after welding: 720-760°C, holding period 2 minutes/mm thickness, at least 60 minutes and cooling in air;<br /><br />Stress relieving after cold forming: 650-750°C, holding period 2 min/mm thickness, at least 60 minutes and cooling in air.