JIANGSU ZSA INDUSTRY CO., LTD 

Advantages of Material Properties
Stable Performance Across a Wide Temperature Range: As a precipitation-hardening nickel-chromium-iron superalloy containing niobium and molybdenum, it maintains stable mechanical properties within an extremely wide temperature range of -252℃ to 700℃. Below 650℃, its yield strength is at the leading level among wrought superalloys; even at 700℃, it can meet the strength requirements of most extreme working conditions, suitable for diverse scenarios ranging from low-temperature cold chain-related equipment to high-temperature components of aero-engines.
Superior Mechanical and Weather Resistance: After solution treatment + aging precipitation hardening, its tensile strength can reach 1500MPa, yield strength is approximately 1200MPa, and it exhibits excellent creep resistance with a fatigue test life of up to 5 million cycles. Additionally, it possesses outstanding corrosion resistance and radiation resistance, capable of withstanding erosion from seawater and chemical media, as well as stable service in high-radiation environments such as nuclear reactors.
Design Value of Knurled Structure
The surface of the bolt head is processed into straight or cross knurling through knurling technology, whose core function is to significantly enhance the friction between the hand and the head. This design allows manual tightening and loosening without relying on special tools such as wrenches, making it particularly suitable for connection parts that require frequent disassembly and adjustment. Meanwhile, the knurled structure also has a certain anti-slip effect, ensuring reliable operation even in oily environments or low-temperature conditions with gloves, achieving a balance between convenience and practicality.