4145h Mod Alloy Steel / AISI 4145h Hollow Bar for API Spec 7-1 Drill Pipe
Laiwu Xincheng Metal Co., Ltd.- Processing Object：Metal
- Molding Style：Forging
- Application：Oil Field
- Material：Steel
- Heat Treatment：Quenching
- Surface Treatment：Polishing
Base Info
- Model NO.：4145H MOD
- Forging Tolerance：-0,+3mm
- Standard：API Spec 7-1
- Certification：CE, RoHS, ISO 9001:2000, ISO 9001:2008
- Products：Hollow Bar
- Standards：API Spec 7-1
- Grade：AISI 4145h
- Transport Package：Standard Sea Worthy
- Origin：China
- Production Capacity：3000tons,Month
Description
Basic Info.
Model NO. 4145H MOD Forging Tolerance -0/+3mm Standard API Spec 7-1 Certification CE, RoHS, ISO 9001:2000, ISO 9001:2008 Products Hollow Bar Standards API Spec 7-1 Grade AISI 4145h Transport Package Standard Sea Worthy Origin China Production Capacity 3000tons/MonthProduct Description
4145H MOD Alloy Steel / Aisi 4145h Hollow Bar For Api Spec 7-1 Drill Pipe1.Material Introduction
AISI 4145H is a chromium molybdenum quality alloy steel specification. As a high tensile steel grade AISI 4145H is primarily supplied in the hardened and tempered condition to 30-36HRc range to AISI 4145H modified. With a slightly higher carbon content AISI 4145H is similar to AISI 4140 in that it offers good ductility, shock resisting characteristics combined with resistance to wear..
2.Application
AISI 4145 is more popular in larger diameters due to its increased strength and hardenability. It is commonly used in the down hole drilling tools such as drill collars. Other applications include components exposed to heavy strain, such as shafts, gear, bolts etc. AISI 4145H can also be used in hardened condition as machine parts exposed to heavy wear.
3.EQUIVALENT STANDARDS
EN 1.7225
ASTM A255
UNS G41450
AISI 4145H Modified
4.Chemical composition of 4145H
| C | Mn | Cr | Mo | Si | Ni | P max | S |
| 0.43-0.48 | 0.85-1.10 | 0.80-1.10 | 0.15-0.25 | 0.10-0.35 | 0.25 | 0.035 | 0.04 |
5.Property standard of AISI 4145H
BY MM
| Dill Collar OD Range | Yield Strength | Tensile Strength | Elongation |
| mm | Mpa Min | Mpa Min | % Min |
| 70 to 98.4 | 827 | 896 | 13 |
| 101.6 to 174.6 | 758 | 827 | 13 |
| 177.8 to 279.4 | 689 | 758 | 13 |
BY INCHE
| Dill Collar OD Range | Yield Strength | Tensile Strength | Elongation |
| inch | Ksi min | Ksi min | % Min |
| 2-3/4" to 3 7/8" | 120 | 130 | 13 |
| 4" to 6-7/8" | 110 | 120 | 13 |
| 7" to 11" | 100 | 110 | 13 |
6.Supplied Sizes Range
Diameter :70mm to 800mm
Length:100mm to 9450mm (31FT)
Condition: Hot Rolled, Polished, Ground, Rough Turned, QT
Shape:Round,Square , Forging,Hollow Bar
7. standard:API Spec 7-1 etc
8.Suitable for many Oil Field tools including Drill Collars, Stabilizer Forgings, Drill Pipe, Rotary Subs ect
9.Hardness Range: 285-340HB
