28Mn6 (Poland / PN) Material Properties

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

Data updates

Latest Update: 2024-12
Total number of updates: 8
Update History:
2022-06 2020-05 2019-06 2018-10 2018-09 2018-08 2014-07

Mechanical Properties

Temperature

≤ 0°C
0 - 30°C
PROPERTY / VALUE
Yield Strength, Rp0.2 val1
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MPa view details
Tensile Strength 540 — 950 MPa view details
Elongation, A 11 % view details
Reduction of Area val1
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% view details
Impact Strength val1
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kJ/m² view details
Impact Energy val1
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J view details
Brinell Hardness (HB) ≤ 255 view details
Grain Size val1
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view details
Yield Strength, Rp0.2 val1
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ksi view details
Tensile Strength 78.3 — 137.8 ksi view details
Elongation, A 11 % view details
Reduction of Area val1
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% view details
Impact Strength val1
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ft·lb/in² view details
Impact Energy val1
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ft·lb view details
Brinell Hardness (HB) ≤ 255 view details
Grain Size val1
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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
0.25 – 0.32
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
≤ 0.40
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Cr+Mo+Ni
VALUE
≤ 0.63
UNIT
%
CAS NUMBER
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

EN 10083-1: 1991 / Quenched and tempered steels - Part 1: Technical delivery conditions for special steels (includes amendment A1:1996)

Heat Treatments

  • <b> Hardening: </b> 830-870°C (Temperatures at the lower end of the range are generally used for water, and those at the upper end for oil quenching; Time for austenitizing as a guide: at least 30 min.); <br> <b> Quenching agent: </b> Water or oil (Other quenching agents such as synthetic quenchants may also be used.); <br> <b> Tempering: </b> 540-680°C (Time for tempering as a guide: at least 1h.); <br> <b> End quench test austenitizing: </b> 850 ± 5°C (Time for austenitizing as a guide: 30-35 min.).
  • Annealing at 650-700°C; Normalizing at 850-890°C; Hardening in polymer or water at 820-850°C (the samples can be quenched qualifying it from any polymer, provided the cooling rate does not exceed 50% of the rate of cooling in water at 20°C. After remission of cooling air) and in oil at 830-860°C; Tempering at 540-640°C.