AISI 4145h Alloy Steel Hollow Bore Bars Tube / AISI 4145h Alloy Steel Hollow Bar

• Processing Object: Metal
• Molding Style: Forging
• Application: Oil Field
• Material: Steel
• Heat Treatment: Quenching
• Surface Treatment: Polishing
• Model NO.: AISI 4145H
• 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

Product Description

 AISI 4145H Alloy Steel Hollow Bore Bars Tube / AISI 4145H Alloy Steel Hollow Bar

1.Material Introduction
AISI 4145H is a chromium - molybdenum low alloy tempered steel. It has improved hardenability and is more is commonly used in the high strength condition with min.110 KSI yield.

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
Tensile strength (ksi) min : 140
Yield Strength 0.2% Proof (ksi) min : 120
Elongation % : 14
Hardness HRc: 30

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.Common standard:API Spec 7-1 etc
8.Used for drill pipe, Drill Collar
9.MOQ: 1PC
10.Payment term: TT LC