BEST PIPELINE EQUIPMENT CO.,LTD
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Product Specification
| High Light | JIS G3445 STKM 11A Carbon Steel Tube ，Low Carbon Seamless Steel Tube ，Weldable Structural Steel Tube | ||
JIS G3445 STKM 11A is a Japanese standard grade for carbon steel tubes used primarily for machine structural purposes, including automotive parts, mechanical components, and general machinery applications. This low-carbon, weldable, and cold-formable steel is conceptually comparable to mild steels like SAE 1010-1012.
| Element | Composition Range |
|---|---|
| Carbon (C) | max. 0.12-0.15% |
| Manganese (Mn) | max. 0.35-0.50% |
| Phosphorus (P) | max. 0.040% |
| Sulfur (S) | max. 0.040% |
| Silicon (Si) | typically max. 0.30% |
Other alloying elements (Cr, Ni, Mo, V, etc.) are typically not intentionally added, with only residual amounts present.
Precision Requirements: For absolute precision, consult the latest official JIS G3445 standard or the mill's Material Test Report (MTR). Some mills may use slightly different maximum Mn or Si levels while still conforming to JIS specifications.
Product Form: JIS G3445 specifically covers steel tubes (seamless, electric-resistance welded), not plate or bar products. For different product forms, cross-reference with structural plate standards like JIS G3101 SS400 or similar low-carbon grades.
Mechanical Properties Focus: In design and quality control, mechanical properties (tensile strength, yield strength, elongation, flattening, flaring) are typically more critical for STKM 11A tubes than minor composition variations, as long as chemistry remains within low-carbon mild steel parameters.
When selecting substitute materials, look for low-carbon mild steel with:
Common practical equivalents include EN S185-S235 or AISI 1010/1012 grades, depending on specific application requirements.
For precise material selection and alternative grade recommendations, please provide details about your specific application, including part type, forming operations, and material thickness requirements.
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Agent,Importer,Exporter,Trading Company,Seller,Other
Year Established:
2010
Total Annual:
1000000-5000000
Employee Number:
116~209
Ecer Certification：
Verified Supplier
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