DIN 1.6526 Structural and constructional steels

Material group: Ferrous Alloys / Structural and constructional steels
Country/Standard: Germany / DIN

Data updates

Latest Update: 2025-02
Total number of updates: 9
Update History

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DIN 1.6526 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
0.17 – 0.23
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
0.35 – 0.70
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Mn
VALUE
0.65 – 0.95
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 10277-4: 2008 / Bright steel products - Technical delivery conditions - Part 4: Case-hardening steels

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DIN 1.6526 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 666 properties — only a subset is shown here.

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DIN 1.6526 Heat Treatments

  • Carburizing at 880 - 980°C. Core-hardening at 860 - 900°C, case hardening at 780 - 820°C, quenching. Tempering at 150 - 200°C.
  • End quench test: Quench from 920°C Carburizing: 880 to 980°C; NOTE: If steels are direct hardened, in general, a carburizing temperature of 950°C is not exceeded. For special procedures, for example under vacuum, higher temperatures (for example 1020 to 1050°C) are not unusual. Core hardening: 860 to 900°C; Case hardening: 780 to 820°C; Tempering: 150 to 200°C (as a guide, for 1 hour minimum).

DIN 1.6526 Mechanical Properties

Temperature

PROPERTY / VALUE
Tensile Strength
570 MPa
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Reduction of Area
57 %
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Brinell Hardness (HB)
145 — 292
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Grain Size
val1
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  • 10 Heat Treatment
  • 4 Metallography
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