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Medium Carbon Steel Carbon Steel Tubing Widely Used S40C In Mechanical Purpose

SHANGHAI UNITE STEEL TRADING CO., LTD

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Medium Carbon Steel Carbon Steel Tubing Widely Used S40C In Mechanical Purpose

Brand Name : UST
Model Number : OD 25-800mm; WT 4-150mm
Certification : ISO 9001
Place of Origin : China
MOQ : 5 tons
Price : USD 650-1400 / ton
Payment Terms : L/C, T/T
Supply Ability : 1000 tons per month
Delivery Time : 15-35 days
Packaging Details : Plastic plugs in both ends, Hexagonal bundles of max 2,000kg with several steel strips, Two tags on each bundle, Wrapped in waterproof paper, PVC sleeve, and sackcloth with several steel strips.
Length : Customized length
Surface : Turned by machin, or as required.
End shape : Round
Alloy or not : Not alloy
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Medium Carbon Steel Carbon Steel Tubing Widely Used S40C In Mechanical Purpose


1. CHARACTER

It is a steel equivalent to medium carbon steel and is a material equivalent to semi-hard steel to hard steel. When it comes to the amount of carbon around this range, the strength of the carbon steel will also come out by heat treatment. Hardness and stickiness are often proportional to half. The final specifications of steel materials are determined by both the components that are born and the heat treatment that is growing up.


2. CHEMICAL COMPOSITION(%)

GradeCSiMnPS
S40C0.37-0.430.15-0.350.60-0.900.030 max0.035 max

3.HEAT TREATMENT TEMPERATURE

GradeTransformation temperature
(° C)
Heat treatment temperature
(° C)
AcArNormalizingAnnealingQuenchingTempering
S40C720-790760-700830 ~ 880 air-cooledAbout 820 furnaces cold830 to 880 water cooled550 ~ 650 rapid cooling

4. MECHANICAL PROPERTIES

GradeMechanical properties
Heat treatmentDrop point
N / mm2
Tensile strength
N / mm 2
Elongation
%
Impact value
(Charpy)
J / cm 2
Hardness
HBW
S40CNormalizing325 min540 min22 min-156-217
Annealing----131-163
Quenching / tempering440 min610 min20 min88 min179-255

5.Equivalent grades of grade S40C

USA

ASTM

China

GB

England

BS

France

NF

Germany

DIN

1036, 104040Mn080A4040M540Mn4

6. DELIVERY CONDITION

Non-heat treatment or heat treatment (annealing, normalizing or tempering) state of delivery. Requirements of the state of heat treatment delivery should be specified in the contract, did not specify those who do not heat treatment delivery.


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