| abstract |
The invention discloses a high-strength corrosion-resistant bolt material, which includes a bolt body and an anti-corrosion layer arranged on the outer surface of the bolt body; the bolt body is made of the following components in weight percentage: C 0.2%-0.5%, Si 0.3%‑0.8%, Hf 0.03%‑0.11%, Te 0.01%‑0.04%, Mn 2.0%‑3.5%, Ni 1.2%‑2.4%, Ag 0.01%‑0.05%, Ge 0.02%‑0.05%, Bi 0.005%-0.01%, rare earth elements 0.001%-0.003%, nano-silicon nitride 0.003%-0.007%, and the balance is Fe and other unavoidable impurity elements; the anti-corrosion layer is composed of the following parts by weight Raw materials: 35-45 parts of oxadiazolyl-based fluorine-containing phenylene ether-based polyamide polymer, 5-8 parts of sulfonated poly(aryl ether ketone-benzimidazole), 10-15 parts of glass fiber, coupling agent 3‑5 parts, 1‑3 parts of antioxidant. The high-strength corrosion-resistant bolt material disclosed by the invention has high strength, sufficient corrosion resistance, good delayed fracture resistance and long service life. |