Stainless steel rod

for general purposeswear-resistanthigh-hardness

Product overview
The SS431 chrome plated rod, induction-hardened to HRC 50–62, is a stainless-steel shaft designed for hydraulic and mechanical applications requiring high wear resistance, dimensional accuracy, and corrosion performance. Manufactured from SS431 material with precision hard chrome plating and induction hardening, it is suitable for hydraulic cylinders, linear motion systems, construction machinery, and marine equipment.

Key product data

• Model: Induction And Hardened
• Brand: EAST AI
• Material: SS431 stainless steel
• Length: Max. 15m
• ID tolerance: f7 / f8 / g6, etc.
• Straightness: ≤0.2/1000 mm
• Application: Hydraulic cylinders for mobile equipment, industrial machinery, heavy-duty systems
• Packing: Anti-rust oil on rod surface; each rod wrapped in paper roll and packed in wooden case; customizable on request
• Surface roughness: ≤0.2µm

Advantages of SS431 chrome plated rod (induction & hardened)

• Controlled hardness (HRC 50–62) — Induction hardening produces a hard case for improved wear resistance.
• High corrosion resistance — SS431 provides protection against rust and pitting, suitable for marine environments.
• Tensile strength and toughness — Designed for heavy-duty hydraulic and mechanical loads.
• Precision hard chrome plating — Smooth, wear-resistant surface that improves seal life and reduces friction.
• Extended service life — Reduced abrasion and fatigue under cyclic loading.
• Versatility — Applicable to hydraulic cylinders, offshore engineering, industrial automation, and precision machinery.
• Consistent quality — Manufactured with process control and traceability.
• Standards compliance — Meets ISO, DIN, ASTM, and GB requirements.

Production process

• Raw material selection — SS431 billets tested for chemical composition and quality.
• Peeling & straightening — Removal of surface defects and improvement of dimensional accuracy.
• Induction hardening — Surface hardening to HRC 50–62 for wear resistance.
• Tempering — Stress relief to ensure stability and toughness.
• Centerless grinding — Accurate diameter with tight tolerances.
• Polishing — Prepares surface for chrome plating.
• Hard chrome plating — Applies protective chromium layer with anti-corrosion properties.
• Final grinding & finishing — Ensures Ra ≤ 0.2µm and precise dimensions.
• Inspection & testing — 100% tested for hardness, straightness, and coating thickness.
• Packing & delivery — Protected with oil film and anti-rust paper for global shipment.

Applications

• Hydraulic cylinders (industrial and mobile systems)
• Marine engineering (offshore equipment, shipbuilding)
• Construction machinery (excavators, loaders, cranes, concrete pump trucks)
• Industrial automation (linear guides, shafts, precision equipment)
• Aerospace & defense components requiring high fatigue resistance
• Energy sector (wind turbines, hydroelectric, oil & gas machinery)

Factory stock & supply capability

• Ready stock sizes: common diameters and lengths available.
• Customization: cutting, machining, threading on request.
• Monthly capacity: 1500+ tons of chrome plated rods.
• Logistics support: global shipping with seaworthy packaging.

Quality control & testing

• Hardness test: verify HRC 50–62 after induction hardening.
• Salt spray test: assesses corrosion resistance of chrome layer.
• Straightness test: ensures precision for cylinder operation.
• Coating thickness test: guarantees uniform chrome plating.
• Surface roughness test: confirms Ra ≤ 0.4µm (typical) and final Ra ≤ 0.2µm specification.
• Ultrasonic & eddy current testing: detect internal defects and surface cracks.

Certifications

• ISO 9001:2015 Quality Management System
• GL (Germanischer Lloyd) Approval of Material Manufacturers (AMM)
• SGS / BV inspection reports
• Mill Test Certificates (EN 10204 3.1 / 3.2)
• RoHS compliance

Technical specifications

• Model: Induction And Hardened
• Trade name: Induction And Hardened
• Brand: EAST AI
• Material: SS431 stainless steel
• Induction hardening hardness: HRC 50–62
• Surface finish: precision hard chrome plating
• Surface roughness: ≤0.2µm
• Length: Max. 15m
• ID tolerances: f7 / f8 / g6, etc.
• Straightness: ≤0.2/1000 mm
• Packing: anti-rust oil, paper roll, wooden case; customizable