SS 2333: The Swedish Material Standard Behind ABA Hose Clamps and 304SS

SS 2333 is the Swedish material designation for austenitic 304 stainless steel — equivalent to AISI 304, EN 1.4301 (X5CrNi18-10), and the W4 (all-304SS) grade in the DIN 3017 hose clamp classification system. The practical reason this article matters for US buyers: ABA hose clamps — stocked by HCL, founded in Gothenburg Sweden in 1896 — use SS 2333 and SS 2343 as the material designations on their product data sheets and certificates. When a US procurement team reads an ABA data sheet and sees "SS 2333," that is ABA's Swedish-heritage notation for standard W4 (304SS). For the companion 316SS grade: SS 2343 is ABA's designation for W5 (316SS).

SS 2333 Material Specification: What It Defines

SS 2333 is published by SIS (Svenska Institutet för Standarder — Swedish Institute for Standards) and specifies an austenitic chromium-nickel stainless steel commonly described as "18/8 stainless" for its approximate 18% chromium and 8% nickel content:

Designation	Swedish SS	US AISI	European EN	DIN 3017 W-Grade
Standard austenitic 304SS	SS 2333	AISI 304	EN 1.4301 (X5CrNi18-10)	W4 (all-304SS)
Low-carbon 304L variant	SS 2333 (variant)	AISI 304L	EN 1.4307 (X2CrNi18-9)	W4 (304L)
Marine-grade 316SS	SS 2343	AISI 316	EN 1.4401 (X5CrNiMo17-12-2)	W5 (all-316SS)

For hose clamp procurement purposes, SS 2333 and AISI 304 are interchangeable specifications — the same chemical composition and mechanical properties, different national designation systems. See our material testing guide for the full material verification framework.

Chemical Composition of SS 2333 (AISI 304)

SS 2333 specifies the following composition ranges (weight %):

• Chromium: 17.5–19.5% — forms the passive oxide layer providing corrosion resistance; the primary alloying element in stainless steel
• Nickel: 8.0–10.5% — stabilises the austenitic crystal structure; enhances ductility, weldability, and corrosion resistance vs ferritic 430SS (W2)
• Carbon: ≤0.07% (standard); ≤0.03% in the 304L low-carbon variant — low carbon prevents carbide precipitation during welding
• Manganese: ≤2.0%
• Silicon: ≤0.75%
• Phosphorus and Sulfur: Maximum limits controlling material cleanliness and machinability

This composition makes SS 2333 / 304SS non-magnetic in the annealed condition (though mild magnetism can develop from cold working during band manufacture — see our W4 guide for the cold-work magnetism nuance). See our corrosion resistance guide for how chromium and nickel content drive corrosion performance.

ABA Hose Clamps: SS 2333 and SS 2343 in Practice

ABA hose clamps (ABA Group, founded Gothenburg 1896, now part of NORMA Group) use Swedish SS material designations on their technical documentation as a heritage of their Swedish origin:

• ABA SS 2333 grade = W4 (all-304SS) — ABA's standard stainless grade for outdoor, automotive, and general industrial applications in the US market; equivalent in every material property to a Mikalor W4 or Ideal Tridon 300SS clamp
• ABA SS 2343 grade = W5 (all-316SS) — ABA's marine and chemical grade; same 2–3% molybdenum addition that gives W5 its chloride pitting resistance; for Gulf Coast, marine, and chemical processing applications

When an ABA data sheet or certificate states "SS 2333," US buyers can confidently cross-reference this to AISI 304 / W4 without any material performance difference.

SS 2333 Performance in US Environments

As the Swedish designation for AISI 304 / W4, SS 2333 material in ABA hose clamps delivers identical performance to any W4-grade clamp:

• Road salt states (Midwest, Northeast, Great Lakes): W4 / SS 2333 is the US professional minimum — does not seize in road salt like W1 or W2 zinc screws
• Automotive and outdoor: Appropriate for engine bay, underbody, and outdoor utility connections in the continental US
• Coastal (Atlantic, Pacific, Gulf atmosphere): W4 / SS 2333 handles coastal atmospheric salt spray; not for direct seawater immersion or Gulf offshore splash zones — those require W5 / SS 2343
• Limitation — chloride pitting: Like all 304SS, SS 2333 lacks molybdenum and will pit in concentrated chloride environments; W5 / SS 2343 is required for saltwater marine and chemical chloride exposure

See our corrosion mechanisms guide for how chloride pitting progresses in 304SS vs 316SS.

Mechanical Properties

SS 2333 / AISI 304 mechanical properties for hose clamp band and screw applications:

• Tensile strength (UTS): ≥515 MPa (75 ksi) — ensures the band withstands tightening stress and maintains clamping force
• Yield strength (Rp0.2): ≥205 MPa (30 ksi) — the stress below which no permanent deformation occurs; prevents the band from losing preload after installation
• Elongation: ≥40% — high ductility allows the band to form into its clamping diameter without cracking; important for small-diameter clamps where bending strain is highest
• Hardness: ≤201 HB — controlled hardness ensures screw threads do not strip at installation torque. See our torque specifications guide.

Conclusion

SS 2333 is ABA's Swedish-heritage designation for AISI 304 / W4 stainless — the same material, different national label. For US buyers reading ABA data sheets: SS 2333 = 304SS = W4; SS 2343 = 316SS = W5. Browse ABA & NORMA hose clamps in both SS 2333 (W4) and SS 2343 (W5) grades, or standard worm gear clamps in W4 from the broader HCL range, or contact our Houston team at (281) 717-1145 for material certificates and ABA SS 2333 / SS 2343 documentation.