PN 20 Structural and constructional steels

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

Data updates

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

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PN 20 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
As
VALUE
≤ 0.08
UNIT
%
CAS NUMBER
7440-38-2
CRITERIA
C
VALUE
0.17 – 0.24
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
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

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

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PN 20 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 9437 properties — only a subset is shown here.

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PN 20 Heat Treatments


  • 1. For case hardening: Heated in the range 1100-850°C, cooled in the water, than normalized at 870-900°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 860-880°C, 2.Carburized area at 780-800°C and 3.Centarline area in water or oil. Tempering 1h at 150-200°C; 2. Wrought steel: Heated at 1100-900°C, softened at 650-700°C and normalized at 880-920°C. Hardened at 860-900°C, center zone cooled in water, than tempered at 550-660°C.

PN 20 Mechanical Properties


Temperature

PROPERTY / VALUE
Tensile Strength
360 — 700 MPa
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Brinell Hardness (HB)
103 — 207
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Elongation, A
≥ 4 %
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Impact Strength
val1
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kJ/m²
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Reduction of Area
val1
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%
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Yield Strength, Rp0.2
val1
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MPa
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PN 20 International Equivalent Materials


Showing 15 of 390 results.

MATERIAL
STANDARD
COUNTRY / PRODUCER
EQUIVALENCE CATEGORY
MATERIAL
STANDARD
B.S.
COUNTRY / PRODUCER
United Kingdom
EQUIVALENCE CATEGORY
Official
MATERIAL
STANDARD
B.S.
COUNTRY / PRODUCER
United Kingdom
EQUIVALENCE CATEGORY
Official
MATERIAL
STANDARD
DIN
COUNTRY / PRODUCER
Germany
EQUIVALENCE CATEGORY
Official
MATERIAL
STANDARD
DIN
COUNTRY / PRODUCER
Germany
EQUIVALENCE CATEGORY
Official
MATERIAL
STANDARD
EN
COUNTRY / PRODUCER
European Union
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MATERIAL
STANDARD
EN
COUNTRY / PRODUCER
European Union
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MATERIAL
STANDARD
EN
COUNTRY / PRODUCER
European Union
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STANDARD
AFNOR NF
COUNTRY / PRODUCER
France
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STANDARD
AFNOR NF
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France
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STANDARD
GOST
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Russia
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STANDARD
JIS
COUNTRY / PRODUCER
Japan
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Official
MATERIAL
STANDARD
NBN
COUNTRY / PRODUCER
Belgium
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STANDARD
NS
COUNTRY / PRODUCER
Norway
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Official
MATERIAL
STANDARD
SAE
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Official
MATERIAL
STANDARD
UNE
COUNTRY / PRODUCER
Spain
EQUIVALENCE CATEGORY
Official

Equivalence categories reflect chemical-composition and mechanical-property comparison — always verify suitability against the governing specification for your application.

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  • 390Cross References

  • 28Composition
  • 119Mechanical Properties
  • 3Physical Properties
  • 1Heat Treatment
  • -Metallography
  • -Machinability

  • -Stress-Strain
  • -Formability
  • -Fatigue
  • -Fracture
  • -Creep

  • 83Joints
  • -Coatings
  • 5Dimensions
  • 1Tribology

  • 8491Corrosion
  • -Ageing
  • -Weatherability
  • -Irradiation

  • 316Total Suppliers