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ASTM A193 Grade B7 Heavy Hex Bolts
Item No.：
A-001
Category：
Summary
We passed the ISO9001:2000 quality management system certification in 2019, and organized and trained an elite team of professional production, inspection, sales and distribution.
Tel: +86-574-86520006
E-mail: info@nbasme.com，sales@nbasme.com
Description
ASTM A193/A193M
ASTM A193/A193M is a technical specification based on ASTM procedures. This code was originally approved in 1936 and is widely used in petroleum and chemical construction applications. This specification covers alloy steel and stainless steel bolting materials on pressure vessels, valves, flanges and fittings used at high temperature or high pressure. The term "bolting material" as used in this specification includes rods, bolts, studs and studs.
A193 Mechanical Property Requirements
|
Grade |
Diameter, inch |
Minimum Tempering Temperature, °F |
Tensile Strength ksi |
Yield Strength, |
2 in Elongation % |
Reduction of Area, % |
Hardness, max |
|
|
min |
min |
min |
min |
Brinell |
Rockwell |
|||
|
B7 |
Up to 2-1⁄2 |
1100 |
125 |
105 |
16 |
50 |
321 HBW |
35 HRC |
|
Over 2-1⁄2 to 4 |
1100 |
115 |
95 |
16 |
50 |
321 HBW |
35 HRC |
|
|
Over 4 to 7 |
1100 |
100 |
75 |
18 |
50 |
321 HBW |
35 HRC |
|
|
B8 Class 1 |
All |
carbide solution treated |
75 |
30 |
30 |
50 |
223 HBW |
96 HRB |
|
B8M Class 1 |
All |
carbide solution treated |
75 |
30 |
30 |
50 |
223 HBW |
96 HRB |
|
B8 Class 2 |
Up to 3⁄4 |
carbide solution treated and strain hardened |
125 |
100 |
12 |
35 |
321 HBW |
35 HRC |
|
Over 3⁄4 to 1 |
115 |
80 |
15 |
35 |
321 HBW |
35 HRC |
||
|
Over 1 to 1-1⁄4 |
105 |
65 |
20 |
35 |
321 HBW |
35 HRC |
||
|
Over 1-1⁄4 to 1-1⁄2 |
100 |
50 |
28 |
45 |
321 HBW |
35 HRC |
||
|
B8M Class 2 |
Up to 3⁄4 |
carbide solution treated and strain hardened |
110 |
95 |
15 |
45 |
321 HBW |
35 HRC |
|
Over 3⁄4 to 1 |
100 |
80 |
20 |
45 |
321 HBW |
35 HRC |
||
|
Over 1 to 1-1⁄4 |
95 |
65 |
25 |
45 |
321 HBW |
35 HRC |
||
|
Over 1-1⁄4 to 1-1⁄2 |
90 |
50 |
30 |
45 |
321 HBW |
35 HRC |
||
A193 Chemical Composition Requirements (%)
|
Element |
C |
Mn |
P, max |
S, max |
Si |
Cr |
Mo |
Ni |
|
B7 (AISI 4140) |
0.37-0.49 |
0.65-1.10 |
0.035 |
0.040 |
0.15-0.35 |
0.75-1.20 |
0.15- 0.25 |
- |
|
B8 (AISI 304) |
0.08max |
2.00max |
0.045max |
0.030max |
1.00max |
18.00-20.00 |
- |
8.00-10.50 |
|
B8M (AISI 316) |
0.08max |
2.00max |
0.045max |
0.030max |
1.00max |
16.00-18.00 |
2.00- 3.00 |
10.00-14.00 |
Product Information
|
Item Name: |
ASTM A193 Gr. B7 HEAVY HEX BOLTS |
|
Material: |
B7(Alloy steel, AISI 4140/4142, Carton steel), B8(Class 1/ Class 2 Stainless steel, AISI 304), |
|
Threads: |
B18.1.1 2A 3A UNC UN UNF |
|
Finish: |
Black, Black zine, Galvanized, Color zinc, PTFE, cadmium (CAD), Galvanized nickel, Dacromet, |
|
Services: |
According to drawings or samples to manufacture products. Support OEM/ODM services |
|
Package: |
a. Plastic bag with outer carton b. According to your requirements |
|
Delivery time: |
3-7 days for sample order, 10-20 days for full container order We will provide shipping information to you anytime |
A193 Recommended Accessories A193
|
Bolt Grade |
Nuts |
Washers |
|
B7 |
A194 Grade 2H |
F436 |
|
B8 Class 1 |
A194 Grade 8 |
SS304 |
|
B8M Class 1 |
A194 Grade 8M |
SS316 |
|
B8 Class 2 |
A194 Grade 8 |
SS304 |
|
B8M Class 2 |
A194 Grade 8M |
SS316 |
About Us
The purpose of our factory is: to develop together with new and old clients for a long time, and to provide better, safer, higher quality and more convenient one-stop fastening system solutions.
Our mission is to provide high quality products at competitive prices. Great service starts with being close to our customers. Growth through customer service.
FAQ
1.Q: What is your payment method?
A: T/T or L/C. 30% deposit is paid in advance before production, and the 70% balance payment is paid before delivery.
For orders with a total amount of less than USD 1,000, we recommend paying 100% in advance to reduce bank charges.
2.Q: Where is your factory located?
A: Our factory is in Ningbo, China. Ningbo port is very close to us.
3.Q: What is the delivery time of your products?
A: For existing products can be shipped within 3~5 days after we receive payment. In general, the delivery time of our product is about 15~20 days (3~5 days for sample order), customized product will be delivered as the negotiation with our clients.
4.Q: What is the shipping method of the goods?
A: Usually our goods are exported by sea freight in full container. We support sea freight, air freight, rail freight and international express. If small quantity, we suggest to send by express, such as DHL, UPS, TNT FEDEX.
Online Message
Thank you for your attention to us. If you have any needs or comments,please leave us a message.
SERVICE HOTLINE:
Address：No. 100, Tianshen Road, Tiangu Industrial Zone, Jiulonghu Town, Zhenhai District, Ningbo, Zhejiang, China.
M.T.：+86-18967865853
TEL：+86-574-86520006
E-mail：info@nbasme.com，sales@nbasme.com
+86-18967865853
+86-574-86520006
info@nbasme.com
sales@nbasme.com
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