Hebei Tianlong Fasteners Co., Ltd

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Zinc nickel alloy fasteners

Zinc Nickel Alloy Fasteners are high-performance fasteners with a zinc-nickel alloy electroplated coating (typically 85% zinc + 10–15% nickel) on carbon/alloy steel or stainless steel substrates.

Category:

Nut series

Email:

liudong@tl-fastener.com

Email:

bolt@tl-fastener.com

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产品描述

Product Overview
Zinc Nickel Alloy Fasteners are high-performance fasteners with a zinc-nickel alloy electroplated coating (typically 85% zinc + 10–15% nickel) on carbon/alloy steel or stainless steel substrates. Designed for extreme corrosion resistance and mechanical stability, they serve as a premium alternative to pure zinc plating and toxic cadmium plating. Ideal for harsh environments where safety and longevity are critical.
Material & Coating Specs
◆ Base material: Grade 4.8/8.8/10.9 carbon steel, alloy steel, 304/316 stainless steel
◆ Coating composition: 10–15% Ni, balance Zn (gamma-phase alloy structure)
◆ Coating thickness: 8–12 μm (uniform, thin, no impact on thread fit)
◆ Surface finish: Silvery-grey, black, or olive drab; non-hexavalent chromium passivation (RoHS/REACH compliant)
◆ Standards: ASTM B841, ISO 4520, DIN EN ISO 9227
◆ Salt spray resistance: 500–1000+ hours (no red rust), 4–8× longer than pure zinc plating
Core Advantages
◆ Superior corrosion resistance
Withstands salt spray, humidity, and industrial acids; ideal for coastal, marine, and chemical environments.
◆ High temperature stability
Maintains performance up to 120°C (250°F); suitable for engine bays and wind turbine components.
◆ Excellent mechanical properties
4× harder than zinc plating; resists wear, thread galling, and seizing under vibration.
◆ Low hydrogen embrittlement
Safer for high-strength bolts (10.9/12.9 grade); reduces cracking risk under load.
◆ Eco-friendly & compliant
Cadmium-free, hexavalent chromium-free; meets global environmental regulations.
Application Scope
◆ Automotive: Chassis, engine parts, underbody components
◆ Renewable energy: Wind turbine towers, solar equipment
◆ Marine & coastal: Shipbuilding, port facilities, offshore platforms
◆ Heavy machinery: Construction equipment, mining machinery
◆ Electronics & electrical: Control boxes, outdoor cabinets
◆ Infrastructure: Bridges, high-speed rail, steel structures

About Us

Hebei Tianlong Fastener Co., LTD., founded in 2006, has been deeply engaged in the field of fastener manufacturing for 18 years, and is a modern enterprise integrating scientific research and development, intelligent manufacturing, global marketing and technical services.

The company has always adhered to the innovation-driven development strategy, through systematic talent training, forged a core team composed of senior engineers, innovative technicians and industry elites, combined with advanced management system, automatic machining center and intelligent testing system, to build a full chain of excellence guarantee system through research and development, production and quality control. Continue to provide customers with high-precision, high-strength, high-stability fastening solutions.