B.S. S 15 Structural and constructional steels

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

Data updates

Latest Update: 2017-04
Total number of updates: 1
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B.S. S 15 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
0.10 – 0.15
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
≤ 0.3
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Mn
VALUE
0.35 – 0.60
UNIT
%
CAS NUMBER
7439-96-5
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

BS 5S 15: 1964 / Specification for 3 per cent nickel case-hardening steel

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B.S. S 15 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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B.S. S 15 Heat Treatments

  • The final heat treatment shall be:
    a) Carburize the parts and carburize or blank carburize the mechanical test samples at a temperature between 880°C and 930°C.
    b) Refine at a temperature between 850°C and 880°C and cool in air, oil or water. c) Harden in water from a temperature between 760°C and 780°C.
    Hardening may be followed by tempering at a temperature not exceeding 200°C. If agreed between the manufacturer and the purchaser and stated on the order, the carburized parts and mechanical test samples shall be hardened by quenching in oil. a) Carburize the parts and carburize or blank carburize the mechanical test samples at a temperature between 880°C and 930°C. b) Refine at a temperature between 850°C and 880°C and cool in air, oil or water. c) Harden in water from a temperature between 760°C and 780°C. Hardening may be followed by tempering at a temperature not exceeding 200°C. If agreed between the manufacturer and the purchaser and stated on the order, the carburized parts and mechanical test samples shall be hardened by quenching in oil.

B.S. S 15 Mechanical Properties

Temperature

PROPERTY / VALUE
Tensile Strength
≥ 770 MPa
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Elongation, A
≥ 12 %
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Impact Energy
≥ 47 J
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  • -Cross References
  • 7Composition
  • 3Mechanical Properties
  • 3Physical Properties
  • 1Heat Treatment
  • -Metallography
  • -Machinability
  • -Stress-Strain
  • -Formability
  • -Fatigue
  • -Fracture
  • -Creep
  • -Joints
  • -Coatings
  • -Dimensions
  • -Tribology
  • -Corrosion
  • -Ageing
  • -Weatherability
  • -Irradiation
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