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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EN 10297 42CrMo4 1.7225 Seamless Cold Finished Steel Tube Bright Surface for Mechnical Purpose
| Material | 4130 | ||
| Chemical Composition | Mechanical Properties(In Quenched & Tempered State) | ||
| C | 0.17-0.24 | Tensile strength(MPA) | 930 |
| Si | 0.17-0.37 | Yield strength (MPA) | 785 |
| Mn | 0.40-0.70 | Elongation(δ5/%) | 12 |
| Cr | 0.80-1.10 | Reduction in Area (ψ/%) | 50 |
| Mo | 0.15-0.25 | Impact (J) | 63 |
| P | ≤0.035 |
Hardness |
≤229HB |
| S | ≤0.035 | ||
| Cu | ≤0.30 | ||
| Ni | ≤0.30 | ||
Overview
EN 10297-1 Grade 42CrMo4 Alloy Steel Seamless Tubes are most
commonly used for general purpose applications worldwide.EN 10297-1
Grade 42CrMo4 Tubes are ductile and strong Tubes with long wearing
properties .These Tubes are manufactured as per EN Specification
and commercially referred as alloy steel Tubes.
EN 10297-1 Grade 42CrMo4 Specifies the technical delivery
conditions for seamless circular tubes made of non-alloy and alloy
steels for mechanical and general engineering purposes. All pipes
are fully certified and traceable with heat numbers hard stamped
onto each random length. We can supply cut lengths; long pieces and
even bore from forged, machined bar to satisfy your urgent demand.
1. Inner and outer walls of tube have high accuracy.
2. Excellent brightness.
3. No oxidization after heat treatment
4. High cleanness inside tube.
Application
High Precision Cold Rolled Seamless Steel Tube is used in
automotive industry, and in the occasion where the high accuracy,
brightness, cleanness of the tube are required.
STANDARD SPECIFICATIONS
| Process | Seamless |
| Shape | Round |
| Size Range | 6-426mm OD; 1-40mm WT |
| Pipe End | Plain / Beveled / Vanished / Plastic Caps |
| Coating | Black / Galvanised / 3LPE / Turned / Peeled / Grinded / Polished / Anti – Corrosion Oil |
| Length | 15 Mtr max Cut to Length available |
| Heat Treatment | Spheroidizing / Full Annealing / Process Annealing / Isothermal Annealing / Normalizing / Quenching / Martempering (Marquenching) / Quench And Tempering / Austempering |
| Application | Oil & Gas / Hydro Carbon Process / Automotive / Boiler, Heat Exchanger / Plumbing, HVAC & Firefighting / Structural / General Engineering / Railways / Sewage & Waterwell |
| Quality Inspection | Third Party inspection is acceptable (SGS, BV etc.) |
TOLERANCE FOR SEAMLESS TUBING
| I.D tolerance (mm) | O.D tolerance (mm) | Straightness (mm) |
| H9-H12 | -/+0.5% | 0.20-0.80 |
STEEL EQUIVALENCY
| USA | German | Japan | China |
| 4140 | 1.7225/ 42crmo4 | SCM440 | 42CrMo |
Chemical Requirements, Composition, %
| ASTM A29/A29M | C | Si | Mn | P | S | Cr | Mo |
| 4140/G41400 | 0.35～0.40 | 0.20～0.35 | 0.70～0.90 | 0.025 Max | 0.025 Max | 0.80～1.10 | 0.18～0.25 |
| DIN 17220, EN 10083 | C | Si | Mn | P | S | Cr | Mo |
| 1.7225/42CrMo4 | 0.38～0.45 | ≤0.40 | 0.60～0.90 | 0.035 Max | 0.035 Max | 0.90～1.20 | 0.15～0.30 |
| GB/T 1229 | C | Si | Mn | P | S | Cr | Mo |
| 42CrMo | 0.38～0.45 | 0.17～0.37 | 0.50～0.80 | 0.030 Max | 0.030 Max | 0.90～1.20 | 0.15～0.25 |
| JIS G4105 | C | Si | Mn | P | S | Cr | Mo |
| SCM440 | 0.38～0.43 | 0.15～0.35 | 0.60～0.85 | 0.030 Max | 0.030 Max | 0.90～1.20 | 0.15～0.30 |
Mechanical Properties
| Grade | Condition | MPa Tensile Point | Yield Point | Elongation |
42CrMo4
| HF | ≥855 | ≥621 | ≥15% |
| SR | ≥855 | ≥689 | ≥10% | |
| A | ≥552 | ≥414 | ≥25% | |
| N | ≥855 | ≥621 | ≥20% | |
| Q+T (Quenched and tempered.) | As your requirements | |||
Mill Test Certificate
MTC is issued in accordance with EN 10204.
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.
