GR B7 Stud Bolts Round Bar

GR B7 Stud Bolts Round Bar

Quick Details Steel Grade: ASTM a193 grade b7 / AISI 4140 / SAE 4140 / 42CrMo4 steel bar Dimensions: m12 m16 m20 m24 m27 m30 m33 m36 m40 m42 m48 m52 m56 m64 m76 etc Place of Origin: Hubei, China (Mainland) Brand Name: KAIXIN Model Number: ASTM a193 grade b7 Technique: hot rolled or cold drawn...

Product Details

Quick Details

Steel Grade: ASTM a193 grade b7 / AISI 4140 / SAE 4140 / 42CrMo4 steel bar

Dimensions: m12 m16 m20 m24 m27 m30 m33 m36 m40 m42 m48 m52 m56 m64 m76 etc

Place of Origin: Hubei, China (Mainland)

Brand Name: KAIXIN

Model Number: ASTM a193 grade b7

Technique:  hot rolled or cold drawn

Application: stud bolt

Alloy Or Not: Is Alloy

Special Use: Cold Heading Steel

Type: round bar

Surface:  black round bar


Alloy steel ASTM a193 b7 material is considered as the most suitable for bolts and nuts to be used at temperature below 450 degree C, with a minimum effect on its structural strength during application at a high temperature.

 

Advantages of ASTM a193 grade b7 qt steel round bar for GR 10.9 bolts we supply: 
1): Smooth surface: Smooth surface without any cracks or scales
2): Good straightness: 1mm for hot rolled + QT bars and 0.5mm for cold drawn +QT bars
3): Uniform microstructure and mechanical properties

Detailed ASTM a193 grade b7 steel specification:
1. Chemical Composition:


C

SI

MN

S

P

CR

MO

0.37-0.49

0.15-0.35

0.65-1.10

0.035(MAX)

0.035(MAX)

0.75-1.20

0.15-0.25


2. Mechanical Property:


Dia

Minimum temperature

Tensile strength

Yield strength

Elongation

Reduction of area

Hardness

Below 65mm

593 ° C

860

720

16

50

35 HRC

65mm to 100mm

593 ° C

795

655

16

50

35 HRC

100mm to 160mm

593 ° C

690

510

18

50

29 HRC

 


Hubei Kaixin Supply Chain Management Co., Ltd.

TEL +8618272169977 ; 0714-6510168

FAX0714-6519746

Emailinfo@hubeikaixin.com

AddNo.37 Huahu Ave Huahu Street.Huangshi City Hubei

Code435000


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