High Temperature Strength Steel Hollow Bar 4140 / 1.7225 / 709m40 / Scm440 / 42CrMo

• Type: Forged Steel Hollow Bar
• Standard: AISI, ASTM, DIN, JIS, GB, BS
• Composition: Carbon, Alloy, Tool.
• Technique: Forged
• Shape: Hollow Bar
• Surface Treatment: Rough Turned
• Model NO.: 4140 / 1.7225 / 709M40 / SCM440 / 42CrMo
• Special Use: High-strength Steel Plate, Mold Steel
• Steel Type: Hollow Bar
• Processing: Forged
• Futhur Processing: Rough Turned/Normalized/Qt/Cutting
• Od: 200-1200mm
• Length: 100mm to 6000mm
• MOQ: 1PC
• Ut Test: Sep 1921 C/C, D/D
• Processing Line: Electric Furnace + Lf + Vd, ESR
• Certificate: En 10204 3.1/3.2
• Transport Package: Standard Sea Worthy
• Specification: OD: M200-M1200
• Origin: China
• Production Capacity: 5000tons/Month

Product Description

High temperature strength steel hollow bar 4140 / 1.7225 / 709M40 / SCM440 / 42CrMo 

1. Forged steel bar sizes we can offer;
Round bar: 200-1000mm
Square bar:150×150-600×600mm
Hollow bar OD:100-1200mm
Other forged parts: as per drawing

2.Supply condition for Forged steel bars:
Forged from vacuum degassed ingots.
Black /Rough Machined /Rough turned

3.Processing of forged steel hollow bar
EAF + LF + VD + Forged +Normalized+Rough Turned+ Heat Treatment (optional)

4.  Forged Steel  bar tolerance:

Forged Bars	Forged sizes	Tolerance
Black	up to 500mm	(-0/+5mm)
	above 500mm	(-0/+8mm)
Rough Turned	all sizes	(-0/+3mm)

5.The main grade we supply:
SAE 4140, SAE 4130, SAE 1045, SAE 1020, SAE 4340, SAE 8620,SAE 4145H
S20C,S45C,SCM440,C45,CK45, SCM435, H13,17CRNIMO6,AND SO ON

6.Quality control:
1. Melting Process: EAF/BOF+LF+VD resulting in ingots
2. Both ends cut by saw
3. Ratio of forging:minimum 3:1
4. Grain size of final product: according to ASTM E112 more than 5,preferred more than 8
5. Ultrasonic test: As per SEP1921 Class C/c or D/d

7.MOQ: one piece per size/grade

8.Payment term: FOB CIF CFR EXW and so on

9.Delivery time : 7 to 30 days after deposit received.