Gr 8.8 Grade10.9 Grade 12.9 High Tensile Qt Steel Round Bar for Bolts

• Customization: Available
• Type: Alloy Steel Bar
• Standard: AISI, ASTM, GB, JIS, DIN, BS
• Model NO.: GR 8.8, 10.9, 12.9
• Application: Structural Steel Bar, Tool Steel Bar, Die Steel Bar, High Strength Bolts
• Surface Treatment: Polished
• Alloy: Alloy
• Special Use: Mold Steel, Free Cutting Steel, Cold Heading Steel
• Products: Quenched and Tempered Steel Round Bar
• Material: Alloy Steel
• Property Standard: Grade 8.8/10.8/12.9/B7
• Diameter: 8mm to 120mm
• Length: 1-6m or as Required
• Packing: Standard Sea Worthy
• Transport Package: Standard Export Packing
• Specification: M10-M100
• Trademark: Laiwu Xincheng
• Origin: China
• HS Code: 72283090
• Production Capacity: 3000tons/Month

Product Description

Gr 8.8 Grade10.9 Grade 12.9 High Tensile QT Steel Round Bar for bolts 


1..Specifications: GR 8.8, 10.9, 12.9 High Tensile Steel Round Bar used for high Tensile bolts, threaded rods, stud bolts, anchor bolts and so on~

2..Sizes range:M10-M100,1/2'' to 4''

3..Length:3-9m as per required

4..Processing and delivery condition:
Hot rolled
Hot rolled+Q&T(Quenched and tempered)
Cold drawn+Q&T(Quenched and tempered)
Peeled+Q&T (Quenched and tempered)

5..Packing: Anti-rust oil+Anti-water cloth

6..Main grades : C45/S45C/1045, SAE 5140/40Cr, SAE 4140(ASTM A193 B7,B7M,B16), SAE 4340, SAE 4130/SCM430, SCM435 and so on.

7..Mechanical Properties for GR 8.8, 10.9, 12.9 High Tensile Steel Round Bar
 

Nominal Size Range	Mechanical Properties
(mm)	Size range	Min. Yield Strength	Min. Tensile Strength
		(MPa)	(MPa)
Class 8.8Medium carbon steel,  quenched and tempered	All Sizes below 16mm	640	800
	16mm - 72mm	660	830
Class 10.9 Alloy steel,  quenched and tempered	10mm - 72mm	940	1040
Class 12.9 Alloy steel,  quenched and tempered	10mm - 72mm	1100	1220