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Introduction
ISO 683-1
covers non-alloy carbon steels intended for heat treatment processes such as
quenching and tempering. These steels are widely used for manufacturing
engineering components that require a combination of strength, toughness, and
wear resistance.
ISO 683-1
carbon steel bars are extensively used in automotive, mechanical, and general
engineering industries due to their ability to achieve enhanced mechanical
properties after heat treatment. These steels are suitable for producing
shafts, gears, fasteners, and other load-bearing components.
Ladhani
Metal Corporation is a manufacturer, supplier, and stockist of ISO 683-1 carbon
steel bars, offering a wide range of grades, sizes, and supply conditions for
industrial applications.
Applicable Standard
Standard
Specification: ISO 683-1
Issuing Organization: International Organization for Standardization (ISO)
Title: Heat-Treatable Steels, Alloy Steels and Free-Cutting Steels – Part 1:
Non-Alloy Steels for Quenching and Tempering
This
standard defines the chemical composition, mechanical properties, and delivery
conditions for non-alloy steels that are intended to be heat treated to achieve
specific strength and hardness levels.
Forms of Supply
ISO 683-1
carbon steel bars are primarily supplied in bar form, but other product forms
are also available to meet diverse application requirements.
Round bars
Square bars
Flat bars
Hexagonal bars
Forged bars
Bright bars (cold drawn)
Peeled and turned bars
Centerless ground bars
Other forms available:
Sheets
Plates
Coils
Wire rods
Typical supply conditions:
Hot rolled
condition
Normalized condition
Annealed condition
Quenched and tempered condition
Cold drawn condition
Standard
sizes:
Diameter: 10
mm to 500 mm
Length: 3 m to 12 m or cut-to-size
Surface finishes:
Black (mill
finish)
Bright finish
Machined finish
Grades Covered Under ISO 683-1
Common
grades include:
C22E, C25E,
C30E, C35E, C40E, C45E, C50E, C55E, C60E, C67E, C70E
These grades
differ primarily in carbon content, which determines hardness and strength
after heat treatment.
Chemical Composition of ISO 683-1 Carbon Steel Bars (%)
Steel
Grades and Chemical Composition (Applicable to Cast Analysis)
Quality
Steels
|
Steel
Name |
C
(%) |
Si
(%) |
Mn
(%) |
P
(%) Max |
S
(%) Max |
Cr
(%) Max |
Mo
(%) Max |
Ni
(%) Max |
Cu
(%) Max |
Cr+Mo+Ni
Max |
|
C25 |
0.22
– 0.29 |
0.10
– 0.40 |
0.40
– 0.70 |
0.045 |
0.045 |
0.40 |
0.10 |
0.40 |
0.30 |
0.63 |
|
C30 |
0.27
– 0.34 |
0.10
– 0.40 |
0.50
– 0.80 |
0.045 |
0.045 |
0.40 |
0.10 |
0.40 |
0.30 |
0.63 |
|
C35 |
0.32
– 0.39 |
0.10
– 0.40 |
0.50
– 0.80 |
0.045 |
0.045 |
0.40 |
0.10 |
0.40 |
0.30 |
0.63 |
|
C40 |
0.37
– 0.44 |
0.10
– 0.40 |
0.50
– 0.80 |
0.045 |
0.045 |
0.40 |
0.10 |
0.40 |
0.30 |
0.63 |
|
C45 |
0.42
– 0.50 |
0.10
– 0.40 |
0.50
– 0.80 |
0.045 |
0.045 |
0.40 |
0.10 |
0.40 |
0.30 |
0.63 |
|
C50 |
0.47
– 0.55 |
0.10
– 0.40 |
0.60
– 0.90 |
0.045 |
0.045 |
0.40 |
0.10 |
0.40 |
0.30 |
0.63 |
|
C55 |
0.52
– 0.60 |
0.10
– 0.40 |
0.60
– 0.90 |
0.045 |
0.045 |
0.40 |
0.10 |
0.40 |
0.30 |
0.63 |
|
C60 |
0.57
– 0.65 |
0.10
– 0.40 |
0.60
– 0.90 |
0.045 |
0.045 |
0.40 |
0.10 |
0.40 |
0.30 |
0.63 |
Special
Steels
|
Steel
Name |
C
(%) |
Si
(%) |
Mn
(%) |
P
(%) Max |
S
(%) Max |
Cr
(%) Max |
Mo
(%) Max |
Ni
(%) Max |
Cu
(%) Max |
Cr+Mo+Ni
Max |
|
C25E |
0.22
– 0.29 |
0.10
– 0.40 |
0.40
– 0.70 |
0.025 |
0.035 |
0.40 |
0.10 |
0.40 |
0.30 |
0.63 |
|
C25R |
0.22
– 0.29 |
0.10
– 0.40 |
0.40
– 0.70 |
0.040 |
0.040 |
0.40 |
0.10 |
0.40 |
0.30 |
0.63 |
|
C30E |
0.27
– 0.34 |
0.10
– 0.40 |
0.50
– 0.80 |
0.025 |
0.035 |
0.40 |
0.10 |
0.40 |
0.30 |
0.63 |
|
C30R |
0.27
– 0.34 |
0.10
– 0.40 |
0.50
– 0.80 |
0.040 |
0.040 |
0.40 |
0.10 |
0.40 |
0.30 |
0.63 |
|
C35E |
0.32
– 0.39 |
0.10
– 0.40 |
0.50
– 0.80 |
0.025 |
0.035 |
0.40 |
0.10 |
0.40 |
0.30 |
0.63 |
|
C35R |
0.32
– 0.39 |
0.10
– 0.40 |
0.50
– 0.80 |
0.040 |
0.040 |
0.40 |
0.10 |
0.40 |
0.30 |
0.63 |
|
C40E |
0.37
– 0.44 |
0.10
– 0.40 |
0.50
– 0.80 |
0.025 |
0.035 |
0.40 |
0.10 |
0.40 |
0.30 |
0.63 |
|
C40R |
0.37
– 0.44 |
0.10
– 0.40 |
0.50
– 0.80 |
0.040 |
0.040 |
0.40 |
0.10 |
0.40 |
0.30 |
0.63 |
|
C45E |
0.42
– 0.50 |
0.10
– 0.40 |
0.50
– 0.80 |
0.025 |
0.035 |
0.40 |
0.10 |
0.40 |
0.30 |
0.63 |
|
C45R |
0.42
– 0.50 |
0.10
– 0.40 |
0.50
– 0.80 |
0.040 |
0.040 |
0.40 |
0.10 |
0.40 |
0.30 |
0.63 |
|
C50E |
0.47
– 0.55 |
0.10
– 0.40 |
0.60
– 0.90 |
0.025 |
0.035 |
0.40 |
0.10 |
0.40 |
0.30 |
0.63 |
|
C50R |
0.47
– 0.55 |
0.10
– 0.40 |
0.60
– 0.90 |
0.040 |
0.040 |
0.40 |
0.10 |
0.40 |
0.30 |
0.63 |
|
C55E |
0.52
– 0.60 |
0.10
– 0.40 |
0.60
– 0.90 |
0.025 |
0.035 |
0.40 |
0.10 |
0.40 |
0.30 |
0.63 |
|
C55R |
0.52
– 0.60 |
0.10
– 0.40 |
0.60
– 0.90 |
0.040 |
0.040 |
0.40 |
0.10 |
0.40 |
0.30 |
0.63 |
|
C60E |
0.57
– 0.65 |
0.10
– 0.40 |
0.60
– 0.90 |
0.025 |
0.035 |
0.40 |
0.10 |
0.40 |
0.30 |
0.63 |
|
C60R |
0.57
– 0.65 |
0.10
– 0.40 |
0.60
– 0.90 |
0.040 |
0.040 |
0.40 |
0.10 |
0.40 |
0.30 |
0.63 |
|
23Mn6 |
0.19
– 0.26 |
0.10
– 0.40 |
1.30
– 1.65 |
0.025 |
0.035 |
0.40 |
0.10 |
0.40 |
0.30 |
0.63 |
|
28Mn6 |
0.25
– 0.32 |
0.10
– 0.40 |
1.30
– 1.65 |
0.025 |
0.035 |
0.40 |
0.10 |
0.40 |
0.30 |
0.63 |
|
36Mn6 |
0.33
– 0.40 |
0.10
– 0.40 |
1.30
– 1.65 |
0.025 |
0.035 |
0.40 |
0.10 |
0.40 |
0.30 |
0.63 |
|
42Mn6 |
0.39
– 0.46 |
0.10
– 0.40 |
1.30
– 1.65 |
0.025 |
0.035 |
0.40 |
0.10 |
0.40 |
0.30 |
0.63 |
Notes
·
Allowed deviation
limits:
Carbon: ±0.01 %
·
Other elements:
according to specified tolerance tables in the standard.
·
Improved machinability
steels may be supplied on request by:
Increasing sulfur
content up to approximately 0.10 % S, or
·
Adding lead.
·
When sulfur is
increased for machinability, the upper limit of manganese may be increased by 0.15 %.
·
The composition values
shown are maximum
limits unless a range is specified.
·
Some steels may be
supplied with lower silicon content;
in such cases, alternative deoxidation methods are used during steelmaking.
Mechanical
Properties of ISO 683-1 Carbon Steel Bars
Mechanical
properties depend on heat treatment condition and section size.
|
Grade |
Tensile Strength (MPa) |
Yield Strength (MPa) |
Elongation (%) |
|
C22E |
430 – 580 |
260 |
24 – 30 |
|
C35E |
600 – 750 |
350 |
20 – 24 |
|
C45E |
700 – 850 |
420 |
16 – 20 |
|
C50E |
750 – 900 |
450 |
14 – 18 |
|
C60E |
800 – 1000 |
480 |
12 – 16 |
Key Features of ISO 683-1 Carbon Steel Bars
• Excellent
response to heat treatment
• High strength and hardness after quenching and tempering
• Good wear resistance
• Balanced toughness and ductility
• Good machinability in annealed condition
• Suitable for heavy-duty engineering applications
• Reliable performance under dynamic loads
Applications of ISO 683-1 Carbon Steel Bars
ISO 683-1
carbon steel bars are widely used across multiple industries.
Automotive Industry
Crankshafts
Axles
Gear shafts
Connecting rods
Mechanical Engineering
Machine
shafts
Spindles
Couplings
Industrial gears
Construction Industry
Structural
components
Support bars
Heavy fabrication parts
Heavy Machinery
Forged
components
Wear-resistant machine parts
General Engineering
Fasteners
Pins
Bushings
Mechanical fittings
Conclusion
ISO 683-1
carbon steel bars are versatile, heat-treatable materials widely used in
engineering and industrial applications. Their ability to achieve high strength
and durability through heat treatment makes them ideal for manufacturing
critical machine components.
Ladhani
Metal Corporation supplies ISO 683-1 carbon steel bars in various grades,
sizes, and supply conditions, ensuring consistent quality and reliable
performance for automotive, construction, and industrial sectors.
FOR REQUIREMENT OF THIS GRADE OR FOR DETAIL CONTACT US AT :-
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