Stainless Steel Sheets – Series 400
Grades 409L, 410S, 420 and 430
The 400 series includes ferritic and martensitic stainless steel grades. Depending on their chemical composition, mechanical properties and service conditions, these grades are used in a wide range of industrial, general-purpose and heat-resistant applications.
Technical Specifications of Series 400 Stainless Steel Sheets
The following table presents the technical specifications offered by Arya Steel Mehregan. Thickness ranges, surface finishes and available widths are listed separately for each grade.
| GRADE | FINISH | THICKNESS RANGE (MM) | WIDTH (MM) | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1000 | 1219 | 1250 | 1500 | 2000 | 2500 | 3000 | |||
| 409L | No.1 | 3.00 – 50.00 | * | * | * | * | |||
| 2D | 0.40 – 3.00 | * | * | * | * | ||||
| 410S | No.1 | 3.00 – 50.00 | * | ||||||
| 2B | 0.30 – 3.00 | * | * | * | * | ||||
| BA | 0.25 – 2.00 | * | * | * | |||||
| No.4 | 0.35 – 2.00 | * | * | * | * | ||||
| 420 | No.1 | 3.00 – 50.00 | * | ||||||
| 2B | 0.40 – 3.00 | * | |||||||
| 430 | No.1 | 3.00 – 50.00 | * | ||||||
| 2B | 0.30 – 3.00 | * | * | * | * | ||||
| BA | 0.25 – 2.00 | * | * | * | |||||
| No.4 | 0.35 – 2.00 | * | * | * | * | ||||
| No.8 | 0.40 – 2.00 | * | |||||||
Note: An asterisk (*) indicates the available width for the corresponding grade, finish and thickness range. Please contact our sales team to confirm current stock and availability.
Chemical Composition of Series 400 Grades
The chemical compositions of grades 409L, 410S, 420 and 430 are presented with reference to ASTM A240 requirements for stainless steel plate, sheet and strip. All values are given in weight percent.
| Grade | UNS | C | Mn | P | S | Si | Cr | Ni | Mo | N | Cu | Other Elements |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 409L* | S40910† | ≤ 0.030 | ≤ 1.00 | ≤ 0.040 | ≤ 0.020 | ≤ 1.00 | 10.5 – 11.7 | ≤ 0.50 | — | ≤ 0.030 | — | Ti: 6×(C+N) minimum, 0.50 maximum; Nb: 0.17 |
| 410S | S41008 | ≤ 0.08 | ≤ 1.00 | ≤ 0.040 | ≤ 0.030 | ≤ 1.00 | 11.5 – 13.5 | ≤ 0.60 | — | — | — | — |
| 420 | S42000 | ≥ 0.15 | ≤ 1.00 | ≤ 0.040 | ≤ 0.030 | ≤ 1.00 | 12.0 – 14.0 | ≤ 0.75 | ≤ 0.50 | — | — | — |
| 430 | S43000 | ≤ 0.12 | ≤ 1.00 | ≤ 0.040 | ≤ 0.030 | ≤ 1.00 | 16.0 – 18.0 | ≤ 0.75 | — | — | — | — |
Values marked with ≤ indicate maximum permitted limits, values marked with ≥ indicate minimum requirements, and ranges represent permitted chemical composition limits.
A dash (—) indicates that no specific limit is listed for that element in the table. It does not mean that the element is absent.
The carbon content for grade 420 is shown here as a minimum of 0.15%. The complete applicable limits should be confirmed against the agreed standard edition and the manufacturer's material test certificate.
Specific note for 409L: Grade 409L is shown with reference to the established S40910 grade composition. ASTM A240 identifies different stabilized grades within the 409 family under separate UNS designations. The UNS designation and final chemical composition must be checked against the manufacturer's material test certificate (MTC).
The actual chemical composition of each shipment must be verified against the manufacturer's chemical analysis certificate and the standard edition agreed upon in the purchase order.
Contact Us for Series 400 Stainless Steel Supply
Contact the Arya Steel Mehregan team for technical information, available widths, thickness ranges and stock inquiries for grades 409L, 410S, 420 and 430.
Contact Our Team →+98-21-88566000