320 (United Kingdom / B.S.) Material Properties

Material group: Ferrous Alloys / Structural and constructional steels
Country/Standard: United Kingdom / B.S.

Data updates

Latest Update: 2021-06
Total number of updates: 2
Update History:
2021-02

Mechanical Properties

Temperature

0 - 30°C
100 - 300°C
≥ 300°C
PROPERTY / VALUE
Yield Strength, Rp0.2 195 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 320 — 480 MPa view details
Elongation, A 25 % view details
Yield Strength, Rp0.2 28.3 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 46.4 — 69.6 ksi view details
Elongation, A 25 % 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
≤ 0.16
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Mn
VALUE
0.30 – 0.70
UNIT
%
CAS NUMBER
7439-96-5
CRITERIA
P
VALUE
≤ 0.040
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

BS 3059-1: 1987 / Steel boiler and superheater tubes. Specification for low tensile carbon steel tubes without specified elevated temperature properties

Heat Treatments

  • Normalized: 880-940°C;<br>Sub-critically annealed: 660-720°C.