Import 50mn 65mn Steel Strip, Galvanized Steel Strip — Buy in Bulk from Supplier in China

The 50Mn 65Mn Steel Strip from Taian Henson Metal Co., Ltd. is a high-carbon cold-rolled spring steel product, with 50Mn and 65Mn designating Chinese steel grades approximately equivalent to ASTM 1050 and 1065 in carbon content range. The source indicates these strips are supplied with a galvanised finish, though the zinc coating weight or class is not specified. The 65Mn grade contains approximately 0.62% to 0.70% carbon and 0.90% to 1.20% manganese, with the higher manganese improving hardenability and temper resistance compared with plain carbon steels. Cold rolling provides tight dimensional tolerances and work-hardened surface finish prior to any subsequent heat treatment by the end user.

The source mentions CK67 as an additional material designation, a European grade comparable to 65Mn in carbon and manganese content. Galvanisation on spring steel strip is atypical for final spring applications due to hydrogen embrittlement risk during zinc coating and the need for subsequent forming or heat treatment. Buyers should clarify whether the galvanised finish is intended for as-formed components in mild corrosive environments, or whether uncoiled strip is supplied for post-galvanisation processing. Typical thickness ranges for cold-rolled spring strip span 0.10mm to 6.0mm, with widths from 10mm to 400mm depending on mill capability and customer specification. Edge conditions (slit, sheared, or dressed) and coil inner diameter affect downstream processing efficiency.

Primary applications include spring production, clamps, and structural components requiring high elastic limit and fatigue resistance in automotive, machinery, and construction sectors. The 65Mn grade in particular suits leaf springs, coil springs, and snap rings after appropriate quenching and tempering. Importers should confirm whether the supplied condition is annealed for subsequent forming, or hardened and tempered for direct use. Material certification, coating specification, and dimensional tolerance class require direct verification with Taian Henson Metal Co., Ltd., as these critical parameters are absent from the source description.

Taian Henson Metal Co., Ltd. is based in Taian, Shandong Province, China, with the supplier classified at imported tier and harbor trust tier. The company profile presents specialisation in high-carbon cold-rolled steel strip for spring and structural applications, marketing to automotive, machinery, and construction sectors. No response rate or average response time data is available in the source, indicating buyers should expect to establish contact without prior communication reliability indicators.

The source description contains no verified establishment date, production capacity, factory audit information, or named clients. ISO and SGS certification are mentioned without certificate numbers or scope details. The supplier offers flexible minimum order quantities and cites FOB and CIF shipping terms, though exact figures and payment conditions require direct negotiation. Buyers should treat all certification and capability claims as requiring independent verification before contract commitment, particularly given the critical material properties required for spring steel applications.