PN 15 Structural and constructional steels

Material group: Ferrous Alloys / Structural and constructional steels
Country/Standard: Poland / PN

Data updates

Latest Update: 2014-07
Total number of updates: 2
Update History
2014-04

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PN 15 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
As
VALUE
≤ 0.08
UNIT
%
CAS NUMBER
7440-38-2
CRITERIA
C
VALUE
0.12 – 0.19
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
≤ 0.30
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Cu
VALUE
val1
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UNIT
%
CAS NUMBER
7440-50-8
CRITERIA
Mn
VALUE
val1
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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

PN-H-84019: 1993 / Unalloyed wrought steel for case hardening and for quenching and tempering - Grades

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PN 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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PN 15 Heat Treatments

  • Hardening in water at 910ºC then Tempering in air at 150ºC.
  • Heated in the range 1100-850°C, cooled in the water, than normalized at 880-920°C, cooling in the air. Softened at 650-700°C, cooling in the air. Hardened in water or oil at 830-870°C. Carburized at 900-980°C, (carburizing temperature generally not exceed 950° C, for special technologies, for example in vacuum, apply higher carburizing temperature, e.g. 1020 to 1050°C), than cooled in 1.water or oil, 2.furnace or 3. in the air; Hardening B: 1. Core area at 880-920°C, 2.Carburized area at 780-820°C and 3.Centarline area in water or oil. Tempering 1h at 150-200°C.

PN 15 Mechanical Properties

Temperature

PROPERTY / VALUE
Yield Strength, Rp0.2
val1
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MPa
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Tensile Strength
360 — 740 MPa
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Elongation, A
16 %
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Reduction of Area
val1
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%
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Impact Strength
val1
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kJ/m²
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Brinell Hardness (HB)
100 — 143
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  • 294 Cross References
  • 18 Composition
  • 37 Mechanical Properties
  • 3 Physical Properties
  • 2 Heat Treatment
  • - Metallography
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  • - Fatigue
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