Active Member
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[China]
Address: Room 1109, Loft Office, Green Land International Plaza, No. 275-8 Guoding East Road, Shanghai 200433, P.R. China. (admin(a)shunitesteel.com)
Contact name:Eric
SHANGHAI UNITE STEEL |
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Alloy Engineering Cold Drawn Steel Tube +A Condition 42CrMo4 with Black Surface
Characteristics
42CrMo4 steel pipe is ultra-high strength steel, with high strength and toughness, hardenability is also good, no obvious temper brittleness, quenched and tempered after a higher fatigue limit and anti-impact ability, low temperature impact toughness is good.
The steel is suitable for manufacturing large and medium-sized
plastic molds requiring a certain strength and toughness.
Chemical Composition and Mechanical Properties
| Steel Grade | Chemical composition (%) | Mechanical properties | ||||||||
| C | Si | Mn | P | S | Cr | Mo | Tensile strength (MPa) | Yield strength (MPa) | Elongation (%) | |
| max | max | max | max | max | max | max | min | min | min | |
| 42CrMo4 | 0.38-0.45 | 0.40 | 0.60-0.90 | 0.035 | 0.035 | 0.90-1.20 | 0.15-0.30 | 1080 | 930 | 12 |
Heat Treatment
| Thermal processing specification | Heating temperature 1150 ~ 1200 ° C, the starting temperature 1130 ~ 1180 ° C, the termination temperature> 850 ° C, φ> 50mm, slow cooling. |
| Normalizing specification | Normalizing temperature 850 ~ 900 ° C, baked air cooled. |
| High temperature tempering specification | Tempering temperature 680 ~ 700 ° C, baked air cooled. |
| Quenching and tempering | Preheat temperature 680 ~ 700 ° C, quenching temperature 840 ~ 880 ° C, oil cooling, tempering temperature 580 ° C, water or oil cold, hardness ≤ 217HBW. |
End
Beveled end, plain end, vanished, or adding plastic caps to protect the two ends as per customer's
requirements
Package
1. Bundle packing.
2. Bevelled end or plain end or warnished as per buyer's required.
3. Marking: as per customer's requests.
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.
