14 340 (Czech Republic / CSN) Material Properties

Material group: Ferrous Alloys / Structural and constructional steels
Country/Standard: Czech Republic / CSN

Data updates

Latest Update: 2023-04
Total number of updates: 2
Update History:
2016-09

Mechanical Properties

Temperature

0 - 30°C
PROPERTY / VALUE
Yield Strength, Rp0.2 val1
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MPa view details
Tensile Strength 785 — 981 MPa view details
Elongation, A 15 % view details
Reduction of Area val1
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% view details
Impact Strength val1
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kJ/m² view details
Brinell Hardness (HB) 225 view details
Vickers Hardness (HV) val1
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view details
Yield Strength, Rp0.2 val1
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ksi view details
Tensile Strength 113.9 — 142.3 ksi view details
Elongation, A 15 % view details
Reduction of Area val1
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% view details
Impact Strength val1
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ft·lb/in² view details
Brinell Hardness (HB) 225 view details
Vickers Hardness (HV) val1
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view details

Physical Properties

Temperature

0 - 30°C
PROPERTY / VALUE
Modulus of Elasticity 190 — 210 GPa view details
Shear Modulus 80 GPa view details
Density 7.67 — 7.86 kg/dm³ view details
Poisson Coefficient val1
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view details
Modulus of Elasticity 27.6 E+03 — 30.5 E+03 ksi view details
Shear Modulus 11.7 E+03 ksi view details
Density 0.277 — 0.284 lb/in³ view details
Poisson Coefficient val1
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view details

Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
Al
VALUE
0.9000 – 1.3000
UNIT
%
CAS NUMBER
7429-90-5
CRITERIA
C
VALUE
0.2800 – 0.3800
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
1.3000 – 1.9000
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Mn
VALUE
val1
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UNIT
%
CAS NUMBER
7439-96-5
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

CSN 41 4340: 1976 / Chromium-Aluminum steel 14 340

Heat Treatments

  • Forging at 1100 to 800°C, after forging cooling slowly (ashes) <br /> Normalizing at 880 to 920°C, cooling in air. <br /> Hardening at 850 to 880°C, cooling in water. <br /> Tempering at 560 to 680°C, cooling in water. <br /> Soft annealing at 700 to 740°C, cooling in furnace. <br /> Annealing to lower tension at 580 to 630°C. <br> Nitriding at 490 to 500°C.