OTAI have one batch of 4140 steel pipe produced by China Standard(GB) with special size.
This batch of 4140 steel pipe was stocked in OTAI warehouse and be sold at promotion price.
AISI(America Standard) 4140 also be called as 42CrMo according China Standard(GB), be called as 42CrMo4/1.7225 according Germany Standard(DIN/W-Nr) , be called as SCM440 according Japan Standard(JIS).
1.Stoked Size of 4140 Alloy Steel Pipe
The 4140 pipe we stock now with below information.
Size: OD273*ID223*L560(100 PIECE) ，OD273*ID223*L470(100 PIECE) ，OD203*ID143*L455(50 PIECE) ，OD140*ID90*L405(50 PIECE)
Tolerance: OD 0/+1, ID 0/-3 , L 0/+5
Condition : Hot Rolled; Black Surface
SGS testing data : Tensile strength : around 890Mpa ， Proof strength: around 582Mpa ， Elongation after fracture : around 16% ,Hardness:26-28HRC
Additional machining like Cold Rolled/Turning/Q+T etc can be done if needed.
This batch of 4140 steel pipe is in promotion.
Promotion price FOB :
2. 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 |
3. Application of SAE AISI 4140 Alloy Steel
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.
4.Gallary of this batch of 4140 steel pipe
5.Quality Assured of Sae AISI 4140 Alloy Steel
Quality assured by Our ISO 9001:2008 quality management system. Our all 4140 steel all had by SEP 1921-84 ultrasonic inspection (UT Test). Quality Grade: E/e, D/d, C/c.
6.Note
This batch of 4140 steel pipe with above special size can be delivered immediately. And if you want to buy 4140 steel with other sizes, you can send your require to jack@otaisteel.com.
OTAI’s staff will contact you and serve you. Beside this batch of good in stock, we also can supply 4140 steel plates,4140 steel round bar with any size you want.
The related OTAI’s website with the introduction of 4140.
If you have any 4140 steel pipe inquiry and question for Price, Application, hot treatment, please don’t hesitate to contact us.
Email: Jack@otaisteel.com
Tel: +86-769- 23190193
Fax: +86-769-88705839