Structural Steel Plate · structural plate for industrial and commercial building structures, crane booms, machine frames, and general welded fabrication
1.1 This specification covers a group of common requirements which, unless otherwise specified in the purchase order or in an individual specification, shall apply to carbon and alloy steel bars under each of the following ASTM specifications (or under any other ASTM specification which invokes this Specification or portions thereof): Hot-Rolled Carbon Steel Bars: A29 Steel Bars, Carbon, Quenched and Tempered: A321 Steel Bars, Carbon, Hot-Rolled from “T” Rails: A499 Steel Bars, Carbon, Merchant Quality: A575 Steel…
Specification text excerpt, reproduced for reference. Read the full AISI 4140 / ASTM A29 text →
| Property | When Minimum Element is Specified |
|---|---|
| Carbon | to 0.12 incl |
| Manganese | to 0.40 incl |
| Phosphorus | to 0.040 incl |
| Sulfur | to 0.050 incl |
| Silicon | to 0.10 incl |
| Copper | When copper is required 0.20 |
| Lead | When lead is required |
| Bismuth | — |
| Calcium | — |
| Selenium | — |
Limits as specified in AISI 4140 / ASTM A29. Where the standard sets different values by thickness or product analysis, each band is shown separately.
AISI4140 is normally specified for industrial and commercial building structures, crane booms, machine frames, and general welded fabrication.
We supply it cut to size by plasma, laser or waterjet, with edges machined or flame-cut to your drawing, and can deliver in the heat-treatment condition your fabrication procedure requires.
As-rolled, normalized, normalized rolled or thermomechanically rolled (TMCP), following the delivery condition coded in the grade designation.
Z15 / Z25 / Z35 to EN 10164 on request; UT to EN 10160; EN 10204 3.1 / 3.2 mill test certificate; Third-party inspection by SGS / BV / TÜV
Seaworthy packing — bottom skids, steel strapping, VCI film and edge protection — is standard for sea freight. Container loading plans with piece weights are issued before shipment.
Send the grade or the standard you specify, the thickness range, quantity and destination port. We reply with price, lead time, delivery term and the applicable certificate within 12 hours (Mon–Sat, GMT+8).
