4140 HT Turned, Ground & Polished Precision Shafting material is quench & tempered, stress relieved, machine straightened and turned ground & polished. I.T.S. stocks this grade in both metric and standard sizes. Alloy 4140 is widely used as an alternative to carbon steel where strength and fatigue are a concern. It is a general-purpose alloy used where substantial strength, toughness, and hardness are required. Through tempering, quenching and the cold finishing process, the result is improved strength and ductility, improved toughness, better fatigue resistance, and superior surface condition.

Tianjin Bao Steel Pipe CO.,LTD is a professional and experienced steel pipe supplier and exporter, the largest distributor of TPCO, Baosteel Group and Angang Group, exporting more than 150,000 tons of steel pipes and fittings to more than 150 countries every year. We have a large stock of 4140 steel pipes of various grades, which can be shipped promptly after you place an order. We also have perfect pipe deep processing capabilities, such as pipe 3PE coating, aluminizing, thermal expansion, U-shape processing, threading, slotting, finning, etc. If you need, welcome to inquire.

Specification

Technical data

Chemical Composition of AISI 4140 Steel Material

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

Application

AISI 4140 Steel is a Alloy Structural Steel belong to ASTM A29/A29M Steel Grade standard. AISI 4140 used in Oil and Gas industry and Large Machinery Strutural. 4140 Steel China Supplier and factory Otai Special Steel Supply 4140 steel in Round bar, Plate, Flat bar, Square, Forging Ring and others any shape. And provide cutting, sawing, milled, machining processing.

FAQ

1.Q: Are you a factory or trading company?
A: We are professional manufacturer, and our company also is a very professional a trade company for steel products.We can provide a wide range of steel products.

2.Q:What do your factory do regarding quality control?
A: We have obtained ISO, CE and other certifications. From materials to products, we check every process to maintain good quality.

3.Q: Can I get samples before order ?
A: Yes, of course. Usually our samples are free. we can produce by your samples or technical drawings.

4.Q:How do you make our business long-term and good relationship?
A:We keep good quality and competitive price to ensure our customers benefit ; We respect every customer as our friend and we sincerely do business and make friends with them.No matter where they come from.

5.Q:what is your delivery time ?
A: Our delivery time is about one week, timing according to the number of customers.

Consult our expert technicians today for professional solutions.

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Steel Pipe Pile Application

Feb 07, 2023

Steel pipe piles are suitable for foundations in wharf and harbor construction, and their diameters generally range from 400-2000mm, with the most commonly used at 1800mm.