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| Categories | Carbon Steel Tubing |
|---|---|
| Brand Name: | UST |
| Model Number: | OD 25-800mm; WT 4-150mm |
| Certification: | ISO 9001 |
| Place of Origin: | China |
| MOQ: | 5 tons |
| Price: | USD 700-2000 / 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 |
| Company Info. |
| SHANGHAI UNITE STEEL |
| View Contact Details |
| Product List |
Medium Carbon Steel Seamless Tube Widely Used S40C In Mechanical Purpose
CHARACTERISTICS
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.
CHEMICAL COMPOSITION(%)
| Grade | C | Si | Mn | P | S |
| S40C | 0.37-0.43 | 0.15-0.35 | 0.60-0.90 | 0.030 max | 0.035 max |
HEAT TREATMENT TEMPERATURE
| Grade | Transformation temperature (° C) | Heat treatment temperature (° C) | ||||
| Ac | Ar | Normalizing | Annealing | Quenching | Tempering | |
| S40C | 720-790 | 760-700 | 830 ~ 880 air-cooled | About 820 furnaces cold | 830 to 880 water cooled | 550 ~ 650 rapid cooling |
MECHANICAL PROPERTIES
| Grade | Mechanical properties | |||||
| Heat treatment | Drop point N / mm2 | Tensile strength N / mm 2 | Elongation % | Impact value (Charpy) J / cm 2 | Hardness HBW | |
| S40C | Normalizing | 325 min | 540 min | 22 min | - | 156-217 |
| Annealing | - | - | - | - | 131-163 | |
| Quenching / tempering | 440 min | 610 min | 20 min | 88 min | 179-255 | |
GRADES EQUIVALENCY
USA ASTM | China GB | England BS | France NF | Germany DIN |
| 1036, 1040 | 40Mn | 080A40 | 40M5 | 40Mn4 |
DELIVERY CONDITIONS
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.
What we can offer?
-We offer a wide range of steel products in a wide variety of dimensions and executions, according to the common international specifications or customize.
-Machining and heat treatment are available.
-Also, we advise you in choosing the right materials.
Quality Assurance
Below inspection will be done in the production.
(1) ray detection---RT;
(2) ultrasonic testing---UT;
(3) Magnetic Particle Testing-MT;
(4) penetration testing-PT;
(5) eddy current flaw detection-ET
Package
In standard export packing and seaworthy material with hexagon shape bundle, covered with tarpaulin, in containers or in bulk, or upon request
Payment & Delivery
1. Both T/T and L/C will be acceptable
2. Trade Terms: FOB, CIF, CFR
3. The delivery will be in 10-15 days if have stock; For customized items, the delivery will be negotiated by both parties
4. Shipping by sea freight from Shanghai Port (PRC) for Bulk orders, by airfreight or express for samples
Shanghai Unite Steel Trading Co., Ltd
We are committed to integrate engineering steel resources in china and serve the global engineering steel market. Our company has more than 15 years of experience in steel researching, production, managing and sales. And our team mostly are based on and worked in national famous steel enterprise.
In the aspect of resources and information, we have established cooperative and stronger relationship with nearly hundred enterprises, either state-owned or private owned in china.
What’s more, we have built long, deep and close business relationship with dozens of steel company, Sharing and holding equities with several steel enterprises. Because of the close cooperation with steel companies and our pioneering spirit, which can ensure us stay at the top competition, and ensure our customers get what they really want!
Q: Are you a manufacturer or merely a trader?
A: We are group of companies and owned manufacturer bases and
trading company. We specialized in special steel which include
alloy structural steel and carbon steel and stainless steel, etc.
All material are with high quality and competitive price.
Q: How do you guarantee the quality of your product?
A: Firstly, we can provide the certificates from the third party,
such as TUV, CE, if you need. Secondly, we have a complete set of
inspection system and every process is checked by QC. Quality is
the lifeline of enterprise survival.
Q: Delivery time?
A: We have ready stock for most of material grades in our
warehouse. If the material doesn't have stock, the delivery lead
time is about 5-30 days after receiving your prepayment or firm
order.
Q: What is the payment term?
A: T/T or L/C.
Q: Can we visit your company and factory?
A: Yes, warmly welcome! We can book the hotel for you before you
come to China and arrange our driver to our airport to pick you up
when you come.
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