PN P55 Structural and constructional steels

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

Data updates

Latest Update: 2022-04
Total number of updates: 2
Update History
2014-07

This material has 52 properties — only a subset is shown here.

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PN P55 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
Al
VALUE
≥ 0.02
UNIT
%
CAS NUMBER
7429-90-5
CRITERIA
C
VALUE
0.52 – 0.60
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
≤ 0.30
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Cr+Cu+Mo+Ni
VALUE
val1
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UNIT
%
CAS NUMBER
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
Mo
VALUE
val1
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UNIT
%
CAS NUMBER
7439-98-7
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
CRITERIA
V
VALUE
val1
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UNIT
%
CAS NUMBER
7440-62-2

PN-H-84027-04: 1988 / Steel for railway - Forgings of draw-gear - Grades

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PN P55 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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This material has 52 properties — only a subset is shown here.

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PN P55 Heat Treatments

  • Forging at 1100-850°C and slow cooling in containers or in piles in the hall; Softening at 650-700°C and slow cooling in the furnace; Normalizing at 830-860°C and cooling in still air; Quenching in water at 800-830°C or in oil at 810-840°C; Tempering at 530-670°C and cooling in still air in the hall

PN P55 Mechanical Properties

Temperature

PROPERTY / VALUE
Yield Strength, Rp0.2
val1
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MPa
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Tensile Strength
750 — 860 MPa
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Elongation, A
12 %
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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)
210 — 250
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  • - Cross References
  • 24 Composition
  • 24 Mechanical Properties
  • 3 Physical Properties
  • 1 Heat Treatment
  • - Metallography
  • - Machinability
  • - Stress-Strain
  • - Formability
  • - Fatigue
  • - Fracture
  • - Creep
  • - Joints
  • - Coatings
  • - Dimensions
  • - Tribology
  • - Corrosion
  • - Ageing
  • - Weatherability
  • - Irradiation
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