Steel cord is a precision-engineered reinforcement material made from high-quality high-carbon steel wire, surface-treated with a brass plating to ensure optimal adhesion to rubber compounds. As a critical raw material in tire manufacturing and conveyor belt production, SFT's steel cord delivers exceptional tensile strength, fatigue resistance, and durability under extreme operating conditions.
Specifications
Below are the specifications for the steel cord.
Please feel free to contact us for more specifications.
| Steel cord | |||||
construction | lay length | Direction of twist | wire diameter | Breaking force | Linear density |
3+9+15*0.225HT | 6.3±0.315/12.5±0.625 18±0.9 | Z/Z/Z | 1.38±0.069 | ≥3120 | 8.67±0.43 |
3+9+15*0.225ST | 6.3±0.315/12.5±0.625 18±0.9 | Z/Z/Z | 1.38±0.069 | ≥3485 | 8.67±0.43 |
3+9+15*0.22+0.15 | 6.3±0.32/12.5±0.63 18±0.9/3.5±0.18 | S/S/Z/S | 1.62±0.08 | ≥2700 | 8.5±0.25 |
3+9+15*0.175+0.15 | 5±0.25/10±0.5 16±0.8/3.5±0.18 | S/S/Z/S | 1.34±0.07 | ≥1680 | 5.42±0.27 |
3+9*0.22 | 6.3±0.32/12.5±0.63 | S/S | 0.92±0.046 | ≥1185 | 3.65±0.182 |
3+9*0.22HT | 6.3±0.32/12.5±0.63 | S/S | 0.92±0.046 | ≥1360 | 3.65±0.182 |
3+9*0.22+0.15 | 6.3±0.32/12.5±0.63 3.5±0.18 | S/S/Z | 1.18±0.06 | ≥1185 | 3.85±0.18 |
3+9*0.22+0.15HT | 6.3±0.32/12.5±0.63 3.5±0.18 | S/S/Z | 1.18±0.06 | ≥1360 | 3.85±0.18 |
3*0.24/9*0.225HT | 14±0.7/14±0.7 | S/S | 0.94±0.05 | ≥1445 | 3.94±0.2 |
3*0.22/9*0.20HT | 12.5±0.63/12.5±0.63 | S/S | 0.88±0.04 | ≥1185 | 3.17±0.16 |
3*0.22/9*0.20+0.15HT | 12.5±0.63/12.5±0.63 5.0±0.25 | S/S/Z | 1.11±0.055 | ≥1185 | 3.33±0.166 |
3*0.24/9*0.225+0.15HT | 12.5±0.63/12.5±0.63 5.0±0.25 | S/S/Z | 1.17±0.06 | ≥1445 | 4.10±0.21 |
3*0.15+6*0.27HT | 9±0.45/10±0.5 | S/Z | 0.85±0.040 | ≥1000 | 3.17±0.158 |
3*0.20+6*0.35 | 10±0.5/18±0.9 | S/Z | 1.13±0.03 | ≥1550 | 5.34±0.28 |
3*0.20+6*0.35HT | 10±0.5/18±0.9 | S/Z | 1.13±0.03 | ≥1850 | 5.34±0.28 |
2+7*0.22HT | 6.3±0.315/12.5±0.63 | S/S | 0.83±0.041 | ≥1010 | 2.74±0.137 |
2+7*0.30ST | 8±0.4/16±0.8 | S/S | 1.19±0.06 | ≥2005 | 3.89±0.2 |
3*7*0.20HE | 3.9±0.19/6.3±0.31 | S/S | 1.34±0.08 | ≥1360 | 5.77±0.23 |
3*3*0.20HE | 3.0±0.15/6.0±0.3 | S/S | 0.92±0.06 | ≥715 | 2.42±0.12 |
3*4*0.22HE | 3.15±0.157/6.3±0.31 | S/S | 1.18±0.059 | ≥940 | 3.95±0.2 |
3+8*0.33HT | 10±0.5/18±0.9 | S/S | 1.36±0.07 | ≥2650 | 7.48±0.37 |
3+8*0.35HT | 10±0.5/20±1 | S/S | 1.44±0.072 | ≥2860 | 8.44±0.422 |
3+8*0.33HT | 10±0.5/20±1 | S/S | 1.34±0.07 | ≥2940 | 7.48±0.37 |
3+8*0.22HT | 6.3±0.315/12.5±0.625 | S/S | 0.9±0.04 | ≥1240 | 3.35±0.16 |
5*0.25NT | 10±0.5 | S | 0.67±0.03 | ≥660 | 1.95±0.1 |
5*0.38HT | 18±0.9 | S | 1.34±0.08 | ≥1505 | 4.51±0.225 |
5*0.35HT | 17±0.85 | S | 0.94±0.047 | ≥1310 | 3.82±0.19 |
5*0.38HI | 14±0.7 | S | 1.030±0.051 | ≥1185 | 3.82±0.19 |
5*0.35HI | 14±0.7 | S | 1.19±0.06 | ≥1130 | 4.63±0.23 |
What sets STF steel cord apart is its balanced combination of high puncture resistance, excellent resilience, and low elongation under load. In real-world applications, our steel cord has been used by tire manufacturers across Asia and Europe to produce passenger tires that achieve lower rolling resistance and reduced fuel consumption——a direct result of the cord's optimized brass coating thickness and uniform filament tension. One of our long-term partners in the heavy truck tire sector reported a 10% improvement in tire retreadability after switching to SFT steel cord, validating the product's consistent quality across production batches.
Applications
SFT's steel cord is engineered for four primary application areas:
Passenger Car Tires (PCR) : Providing the structural integrity needed for high-speed stability and ride comfort
Heavy Truck Tires (TBR) : Delivering the carcass strength required for heavy loads and long-haul durability
Engineering Tires (OTR) : Withstanding the extreme conditions of mining and construction equipment
Conveyor Belts : Serving as the tensile member in steel-cord conveyor belts for bulk material handling
Advantages
High Strength
Light weight
Low fuel consumption
Good abrasion resistance
Fast heat dissipation
Better safety
Tyre puncture resistance
Packing
- Winding on spools
- Packaged in cartons/pallets
Add: No. 318-354, Jingkai Road, Huangcun Town, Daxing District, Beijing
E-mail: chris@sftrubber.com
Telephone: +86-15652368678
WhatsApp: +86-15652368678
Wechat: c15652368678
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