Marzouk Steel is a reputable manufacturer and supplier of Carbon Steel Fasteners located in Tunis, Tunisia. They cater to a diverse array of industries, including construction, engineering, and various industrial sectors. Known for their precision in manufacturing and rigorous quality control, Marzouk Steel adheres to international standards. With state-of-the-art production facilities and a team of skilled professionals, they provide carbon steel fasteners that are built to last, offering reliable strength and durability. Their commitment to customer satisfaction means you can expect timely deliveries, competitive pricing, and consistent product quality. Marzouk Steel has established itself as a trusted partner for fastening solutions in even the most demanding applications.
Carbon Steel Fasteners are crafted from high-quality carbon steel, featuring a carefully controlled composition that usually includes carbon, manganese, silicon, and trace elements. This blend gives them impressive strength, hardness, and toughness. On a mechanical level, these fasteners deliver dependable tensile and yield strength, good shear resistance, and sufficient ductility. They excel under both static and dynamic loads and can be heat-treated to boost their strength and wear resistance. These well-balanced mechanical properties ensure secure fastening and a long service life.
| 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.
Marzouk Steel is one of the most prominent manufacturers and suppliers of superior quality Carbon Steel Fasteners in Tunis, Tunisia. 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.
Thanks to their versatility and cost-effectiveness, Carbon Steel Fasteners are widely utilized across various industries. You’ll find them in construction, structural steel fabrication, machinery assembly, automotive components, and general engineering projects. They also play a crucial role in oil and gas, power plants, and the manufacturing of industrial equipment. When properly protected, carbon steel fasteners create strong, reliable joints suitable for both indoor and outdoor applications, making them vital components in mechanical and structural assemblies.
Marzouk 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 Tunis, Tunisia.
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