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Zhangzhou Carbon Steel Fastener
QS Fastener: Zhangzhou Carbon Steel Fastener
Name: Zhangzhou Carbon Steel Fastener
Standard: ASTM
Material: A193 B7
Size: 3/4 inch
Lenght: 120 mm
Surface: Galvanization
Feature: high strength
Standard: ASTM
Material: A193 B7
Size: 3/4 inch
Lenght: 120 mm
Surface: Galvanization
Feature: high strength
Quantity
The standard for this Carbon Steel Fastener is ASTM, and the material is A193 B7 high-strength alloy steel. The specification is 3/4 inch with a length of 120 mm. Dimensions can be customized according to customer requirements. The surface is hot-dip galvanized, and we also offer other surface treatments such as black oxide, PTFE, and Dacromet. In dry environments, this Carbon Steel Fastener exhibits excellent corrosion resistance and outstanding tensile strength. It is suitable for pipe, flange, and valve connections in high-pressure, high-temperature environments and is a commonly used Carbon Steel Fastener in the petroleum, chemical, and heavy machinery industries.
Is carbon steel good for Fasteners?
Yes, carbon steel is very suitable for making fasteners and is currently the most widely used and highest-volume fastener material in the industrial sector.
Yes, carbon steel is very suitable for making fasteners and is currently the most widely used and highest-volume fastener material in the industrial sector.
As a high-performance Carbon Steel Fastener, A193 B7 is a typical representative of carbon steel (alloy steel) in the high-end fastener field. From a professional perspective, the advantages of carbon steel are mainly reflected in the following points:
1. Obvious Strength Advantages
Through quenching and tempering (quenching + high-temperature tempering), carbon steel can achieve tensile and yield strengths exceeding 1000 MPa.
- Taking A193 B7 as an example, as a high-quality Carbon Steel Fastener, its tensile strength typically reaches above 860 MPa, with a yield strength of around 720 MPa.
- This enables it to handle applications requiring strong clamping forces, such as high-pressure pipelines, valves, and flanges.
Through quenching and tempering (quenching + high-temperature tempering), carbon steel can achieve tensile and yield strengths exceeding 1000 MPa.
- Taking A193 B7 as an example, as a high-quality Carbon Steel Fastener, its tensile strength typically reaches above 860 MPa, with a yield strength of around 720 MPa.
- This enables it to handle applications requiring strong clamping forces, such as high-pressure pipelines, valves, and flanges.
2. High Cost-Effectiveness
Compared to stainless steel (such as 304, 316), titanium alloys, or nickel-based alloys, carbon steel has lower raw material costs and good processability, making it suitable for large-scale standardized production. For scenarios such as general mechanical connections, steel structure buildings, and automotive components, choosing a Carbon Steel Fastener is economical and reliable.
Compared to stainless steel (such as 304, 316), titanium alloys, or nickel-based alloys, carbon steel has lower raw material costs and good processability, making it suitable for large-scale standardized production. For scenarios such as general mechanical connections, steel structure buildings, and automotive components, choosing a Carbon Steel Fastener is economical and reliable.
3. Strong Performance Adjustability
By adjusting the carbon content and adding alloying elements (such as chromium and molybdenum), carbon steel fasteners can cover multiple performance grades:
- Low strength: Grades 4.8 and 5.6, used for general consumer products;
- High strength: Grades 8.8, 10.9, and 12.9, used in heavy machinery, bridges, and wind power;
- High temperature/pressure resistance: Materials such as B7 (containing chromium and molybdenum) are specifically used for high-temperature conditions and are a typical high-temperature resistant Carbon Steel Fastener.
By adjusting the carbon content and adding alloying elements (such as chromium and molybdenum), carbon steel fasteners can cover multiple performance grades:
- Low strength: Grades 4.8 and 5.6, used for general consumer products;
- High strength: Grades 8.8, 10.9, and 12.9, used in heavy machinery, bridges, and wind power;
- High temperature/pressure resistance: Materials such as B7 (containing chromium and molybdenum) are specifically used for high-temperature conditions and are a typical high-temperature resistant Carbon Steel Fastener.
4. Good Adaptability to Surface Treatments
Carbon steel itself has weak corrosion resistance, but this shortcoming can be compensated for through surface treatments:
- Galvanizing/Hot-dip galvanizing: Suitable for outdoor or general industrial environments, significantly enhancing the durability of the Carbon Steel Fastener;
- Dacromet: Provides higher salt spray corrosion resistance;
- Black oxide/Phosphating: Suitable for low-corrosion or oil-immersed environments;
- PTFE: Suitable for highly corrosive environments, wide temperature ranges, high friction (anti-seizing), as well as clean/anti-stick applications.
Carbon steel itself has weak corrosion resistance, but this shortcoming can be compensated for through surface treatments:
- Galvanizing/Hot-dip galvanizing: Suitable for outdoor or general industrial environments, significantly enhancing the durability of the Carbon Steel Fastener;
- Dacromet: Provides higher salt spray corrosion resistance;
- Black oxide/Phosphating: Suitable for low-corrosion or oil-immersed environments;
- PTFE: Suitable for highly corrosive environments, wide temperature ranges, high friction (anti-seizing), as well as clean/anti-stick applications.
⚠️ Note
The main drawback of carbon steel fasteners is their corrosion resistance. Caution should be exercised in the following environments, or stainless steel/corrosion-resistant alloys should be considered as alternatives:
- Long-term exposure to humid or marine climates;
- Strong acids, strong alkalis, or chemical media;
- High-temperature oxidizing atmospheres (performance degrades significantly above 400°C).
The main drawback of carbon steel fasteners is their corrosion resistance. Caution should be exercised in the following environments, or stainless steel/corrosion-resistant alloys should be considered as alternatives:
- Long-term exposure to humid or marine climates;
- Strong acids, strong alkalis, or chemical media;
- High-temperature oxidizing atmospheres (performance degrades significantly above 400°C).
Conclusion
If the application scenario demands high strength, is cost-sensitive, and the environmental corrosiveness is controllable (or can be addressed through surface treatment), a Carbon Steel Fastener is a very suitable or even optimal choice. A193 B7 + hot-dip galvanizing combines high strength, high-temperature resistance, and moderate corrosion resistance, and is widely used in industries such as petrochemicals, power plants, and pressure pipelines. It is a well-balanced, high-quality Carbon Steel Fastener.
If the application scenario demands high strength, is cost-sensitive, and the environmental corrosiveness is controllable (or can be addressed through surface treatment), a Carbon Steel Fastener is a very suitable or even optimal choice. A193 B7 + hot-dip galvanizing combines high strength, high-temperature resistance, and moderate corrosion resistance, and is widely used in industries such as petrochemicals, power plants, and pressure pipelines. It is a well-balanced, high-quality Carbon Steel Fastener.
Qishine is ideal choice for EPC companies and project contractors.
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