Stainless Steel Hex Bolt SS304 — DIN 933 A2-70

Description

1. Product Overview

Stainless Steel Hex Bolt SS304 — DIN 933 A2-70 is a high-integrity fastener manufactured to DIN 933 standards from AISI 304 stainless steel and rated A2-70 for tensile strength. It serves as a reliable joining component for structural, mechanical, and process equipment across heavy industry, construction, marine, and equipment manufacturing. The bolt combines corrosion resistance, predictable mechanical performance, and standardized dimensions to minimize installation risk and maintenance downtime. As a strategically important SKU, it reduces lifecycle cost through longevity and interchangeability while supporting global sourcing and compliance requirements.

2. Key Specifications & Technical Characteristics

• Material: AISI 304 stainless steel (equivalent to EN 1.4301 / UNS S30400).

• Grade / Strength: A2-70 (minimum tensile strength 700 N/mm²).

• Standard: DIN 933 (hexagon head, fully threaded or partially threaded as specified).

• Chemical composition (typical): Fe balance, Cr 17.0–19.0%, Ni 8.0–10.5%, C ≤ 0.08%, Mn ≤ 2.0%, Si ≤ 1.0%, P ≤ 0.045%, S ≤ 0.03%.

• Mechanical properties: Proof strength and tensile strength consistent with A2-70 classification; yield and elongation per DIN guidance.

• Surface finish: Mill finish (bright/rolled); optional passivation, electropolish, or pickling available on request.

• Dimensional range: Available in diameters M3 to M24 and standard metric lengths per DIN 933; tolerances per DIN/ISO for fasteners.

• Thread type: Metric coarse thread (ISO Metric), pitch per standard; partial or full thread options available.

• Form & color: Hex head bolt, metallic silver-gray.

• Density: Typical stainless steel density ~7.9 g/cm³.

• Packaging: Bulk (20MT palletized, 25kg boxes, or custom OEM packaging), sealed poly bags within cartons, wooden or steel pallets; container-ready loading.

• Shelf life: Indefinite under normal storage (dry, non-corrosive environment); recommend FIFO rotation for large inventories.

• Traceability: Batch/heat number stamping and mill certificates (EN 10204 2.1/3.1 available on request).

3. Core Industrial Applications

• Primary industries: Oil & gas, petrochemical, marine and shipbuilding, power generation, construction, machinery and equipment manufacturing, water treatment, and food processing (where applicable).

• Operational use cases: Structural bolting for platforms and support frames, pipework and flanged connections, equipment assembly, corrosion-exposed exterior fixtures, maintenance spares and OEM assemblies.

• Why it outperforms alternatives: SS304 A2-70 offers superior corrosion resistance versus carbon steel in atmospheric and mildly corrosive environments while providing reliable tensile strength and dimensional interchangeability according to DIN standards. Compared with lower-grade stainless (e.g., A2-50), the A2-70 rating improves mechanical safety margins; against higher-alloy options (A4/316), it provides cost-effective corrosion protection where chloride resistance is not critical.

• Commercial relevance: Reduces total cost of ownership by lowering replacement frequency and maintenance labor; standardized sizing simplifies inventory management and cross-supplier compatibility.

4. Competitive Advantages

• Quality consistency: Manufactured to DIN 933 with certificate-backed material traceability and statistical quality control.

• Supply reliability: Production scheduling with safety-stock management; scalable batches to support single-container to multi-container requirements.

• Logistics capability: Container-ready packaging, palletization optimized for 20MT bulk, coordinated global shipping lanes from Buea hub, export documentation and customs support.

• Price competitiveness: Optimized grade selection (A2-70) balances performance and cost, enabling lower capex for large projects versus higher-alloy alternatives.

• Sustainability: Long service life reduces replacement waste; option for recycled-content stainless upon request; solvent-free passivation options for reduced environmental impact.

• Technical support: Engineering datasheets, torque/fastening guidance, installation best practices, and material certificates (EN 10204) available; custom sizing and surface treatments supported.

5. Commercial & Supply Information

• Minimum order quantity (MOQ): BULK 20MT.

• Loading capacity: Typical container loading up to 20MT per 20-foot container (subject to packaging configuration and weight distribution).

• Lead times: Standard production lead 2–6 weeks depending on order size and surface treatment; expedited options negotiable.

• Payment & documentation: Proforma invoice, commercial invoice, packing list, mill/test certificates available; Incoterms negotiable.