Aatir Steel, located in Cairo, Egypt, stands out as a top manufacturer and supplier of high-quality Carbon Steel Fasteners. Known for its precision engineering and strict quality standards, Aatir Steel provides products that guarantee strength, reliability, and durability across a variety of industrial and construction applications. The company serves diverse sectors such as automotive, machinery, infrastructure, and manufacturing, blending cutting-edge production technology with thorough quality control. With a strong commitment to meeting client needs and delivering exceptional service, Aatir Steel has built a solid reputation as a trusted partner for businesses in search of high-performance carbon steel fasteners for their critical and demanding projects.
Carbon Steel Fasteners are mainly made of iron, with carefully controlled amounts of carbon, usually between 0.2% and 0.6%, along with trace amounts of manganese, silicon, and other elements. This specific composition provides them with remarkable tensile strength, hardness, and wear resistance. These fasteners can be heat-treated to enhance durability or flexibility based on the requirements of the application. Engineered for high mechanical performance, carbon steel fasteners blend toughness with precise threading, ensuring secure and stable connections in machinery, structures, and equipment, all while resisting deformation under heavy loads or stress.
| Standard | ASTM A193, A194 / ASME SA193, SA194 |
| Sizes | “1/4 to 4” |
| Length | UPTO 5 METERS |
| Specification | IS, BS, ASTM |
| Type | Bolts, nuts, Washers, Anchor Fasteners, Stud Bolts, Eye Bolt, Stud, Threaded Rod, Cotter Pin, Socket Screw, Fine Fasteners & Spares, Foundation Fasteners, etc. |
|
BS 970: 1955 |
Chemical Composition |
|||||||
|
C % |
Si % |
Mn % |
Ni % |
Cr/strong> % |
Mo % |
S % |
P % |
|
|
EN3B |
0.25Max |
0.35Max |
1.0Max |
– |
– |
– |
0.06Max |
0.06Max |
|
EN1A |
0.07/0.15 |
0.10Max. |
0.80/1.20 |
– |
– |
– |
0.20/0.30 |
0.07Max |
|
EN8 |
0.35/0.45 |
0.05/0.35 |
0.60/1.00 |
– |
– |
– |
0.06Max |
0.06Max |
|
EN9 |
0.50/0.60 |
0.05/0.35 |
0.50/0.80 |
– |
– |
– |
0.06Max |
0.06Max |
|
EN16 |
0.30/0.40 |
0.10/0.35 |
1.30/1.80 |
– |
– |
0.20/0.35 |
0.05Max |
0.05Max |
|
EN19 |
0.35/0.45 |
0.10/0.35 |
0.50/0.80 |
– |
0.90/1.50 |
0.20/0.40 |
0.05Max |
0.05Max |
|
EN24 |
0.35/0.45 |
0.10/0.35 |
0.45/0.70 |
1.30/1.80 |
0.90/1.40 |
0.20/0.35 |
0.05Max |
0.05Max |
| Mechanical Properties ISO 898-1 Bolting | |||||||
|
Grade |
Material |
Size Range |
Tensile Strength MPa min. |
Proof Strength MPa min. |
Core Rockwell Hardness |
Yield Strength MPa min. |
|
|
Min. |
Max. |
||||||
|
4.6 |
Low or Medium Carbon Steel |
M5 – M39 3/16” – 1-1/2” |
400 |
225 |
B67 |
B99.5 |
240 |
|
8.8 |
Medium Carbon Steel Q+T |
M5 – M16 3/16” – 5/8” M18 – M39 11/16” – 1-1/2” |
800 830 |
580 600 |
C22 C23 |
C32 C34 |
640 660 |
|
10.9 |
Alloy Steel Q+T |
M5 – M39 3/16” – 1-1/2” |
1040 |
830 |
C32 |
C39 |
940 |
|
12.9 |
Alloy Steel Q+T |
M1.6 – M39 #0 – 1-1/2” |
1220 |
970 |
C39 |
C44 |
1100 |
| High Temperature Bolting Steels | |||||
|
Grade |
Name |
Werkstoff Number |
ASTM |
BS |
Temperature Use |
|
Durehete 900 T22 |
42CrMo5.6 |
1.7233 |
– |
BS1506 631-850 |
Up to 480ºC |
|
Durehete 950 T31 |
40CrMoV4.6 |
1.7711 |
ASTM A193 B16 |
BS1506 671-850 |
Up to 510ºC |
|
Durehete 1055 T41 |
20CrMoVTiB4.10 |
1.7729 |
– |
BS1506 681-820 |
Up to 570ºC |
|
25CrMo4 |
– |
1.7218 |
– |
– |
Up to 400ºC |
|
21CrMoV5.7 |
– |
1.7709 |
– |
– |
Up to 540ºC |
|
42CrMo4 |
– |
1.7225 |
ASTM A193 B7 |
BS1506 630-860 |
Up to 450ºC |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Aatir Steel is one of the most prominent manufacturers and suppliers of superior quality Carbon Steel Fasteners in Cairo, Egypt. As experts in steel solutions, we supply a complete spectrum of products like Carbon Steel, Alloy Steel, Mild Steel, and Galvanized Steel. Our product range comprises Pipes, Tubes, Flanges, Pipe Fittings, Forged Fittings, Sheets, and Plates. Known for our reliable delivery and first-rate customer service, we are committed to supplying high-quality steel materials that guarantee durability and excellent performance in numerous industrial applications.
Carbon Steel Fasteners find extensive use in industries that demand strong, durable, and reliable connections. They play crucial roles in construction, automotive, manufacturing, machinery, and infrastructure projects, securing components and structural elements. Common applications include bolts, screws, nuts, and studs used in machinery assembly, automotive parts, structural frameworks, and equipment fabrication. Their outstanding mechanical properties make them perfect for high-stress and high-load environments. Carbon Steel Fasteners are prized for their ability to deliver long-lasting performance, uphold structural integrity, and ensure safety.
Aatir Steel is a leading manufacturer, supplier and exporter of high-quality Carbon Steel, Alloy Steel, Mild Steel and Galvanized Steel products. Our extensive product range includes Pipes, Tubes, Flanges, Pipe Fittings, Forged Fittings, Sheets and Plates, catering to various industries in Cairo, Egypt.
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