S43940
8 source records. Standards, editions and conditions are presented separately; matching grade names do not establish interchangeability.
Refer to each source for mass fractions and analysis type. Missing values are not treated as 0. Manufacturer typical values, standard guarantees and measured heat results must remain separate. Use the material selector for calculations and condition selection.
Open condition selection, comparison and carbon-equivalent tools for S43940 →S43940 · ASTM A240/A240M-2014
Chemical composition source verified; this does not verify every standard clause, actual supply or measured heat results
- Material category
- Stainless steel
- Subcategory
- Ferritic and martensitic stainless steels
- Material form
- Reference record
- Original record status
- Original-standard record
- Standard edition
- ASTM A240/A240M-2014
- Table / clause
- Table 1 and footnotes A–O
- PDF page references
- 1、5、6
Carbon-equivalent reference
Composition
| Element | Composition requirement |
|---|---|
| C | ≤ 0.03 (lower limit not stated) |
| Mn | ≤ 1.0 (lower limit not stated) |
| P | ≤ 0.04 (lower limit not stated) |
| S | ≤ 0.015 (lower limit not stated) |
| Si | ≤ 1.0 (lower limit not stated) |
| Cr | 17.5 ～ 18.5 |
| Ti | 0.1 ～ 0.6 |
Applicability and limitations
Table 1 gives heat-analysis mass percentages; A single value without a stated range or minimum is a maximum; unspecified elements are not entered as zero. ; Cb and Nb are the same element; Where both a formula and a fixed limit apply, the stricter limit is used. ; This is a plate, sheet and strip standard; cold-heading wire applications and actual supply require separate verification. ; Clause 4.1 also requires compliance with the applicable provisions of ASTM A480/A480M; This record displays the heat composition in Table 1; it does not establish verification of A480 or all product acceptance requirements. ; Other elements in the original table: Ti 0.10–0.60 Cb [0.30+(3×C)] min; See the limits below for the specific coupled requirements.
Combined limits
- Combined-element limits
- Element coefficient
- Nb
- 1
- C
- -3
- Lower limit
- 0.3
- Upper limit
- Not stated
- Requirement
- Nb≥0.30+3C
- Elements requiring measured values from the same heat
- Nb
S43940 · ASME SA-240
Original-source verification is incomplete; this is not a formal standard reference
- Material category
- Stainless steel
- Subcategory
- Ferritic stainless steel
- Material form
- Reference record
- Verification status
- Reference data; original source not verified
Carbon-equivalent reference
Composition
| Element | Composition requirement |
|---|---|
| C | ≤ 0.03 (lower limit not stated) |
| Cr | 17.5 ～ 18.5 |
| Mn | ≤ 1 (lower limit not stated) |
| P | ≤ 0.04 (lower limit not stated) |
| S | ≤ 0.015 (lower limit not stated) |
| Si | ≤ 1 (lower limit not stated) |
| Ti | 0.1 ～ 0.6 |
Applicability and limitations
A match in the materials database does not establish suitability for cold heading or guarantee finished-product strength. Confirmation must consider wire condition, deformation, heat treatment and tests on actual parts.
S43940 · ASTM A240/A240M-2020
Original-source verification is incomplete; this is not a formal standard reference
- Material category
- Stainless steel
- Subcategory
- Ferritic stainless steel
- Material form
- Reference record
- Verification status
- Reference data; original source not verified
Carbon-equivalent reference
Composition
| Element | Composition requirement |
|---|---|
| C | ≤ 0.03 (lower limit not stated) |
| Cr | 17.5 ～ 18.5 |
| Mn | ≤ 1 (lower limit not stated) |
| P | ≤ 0.04 (lower limit not stated) |
| S | ≤ 0.015 (lower limit not stated) |
| Si | ≤ 1 (lower limit not stated) |
| Ti | 0.1 ～ 0.6 |
Applicability and limitations
A match in the materials database does not establish suitability for cold heading or guarantee finished-product strength. Confirmation must consider wire condition, deformation, heat treatment and tests on actual parts.
S43940 · ASTM A268/A268M-2020
Original-source verification is incomplete; this is not a formal standard reference
- Material category
- Stainless steel
- Subcategory
- Ferritic stainless steel
- Material form
- Reference record
- Verification status
- Reference data; original source not verified
Carbon-equivalent reference
Composition
| Element | Composition requirement |
|---|---|
| C | ≤ 0.03 (lower limit not stated) |
| Cr | 17.5 ～ 18.5 |
| Mn | ≤ 1 (lower limit not stated) |
| P | ≤ 0.04 (lower limit not stated) |
| S | ≤ 0.015 (lower limit not stated) |
| Si | ≤ 1 (lower limit not stated) |
| Ti | 0.1 ～ 0.6 |
Applicability and limitations
A match in the materials database does not establish suitability for cold heading or guarantee finished-product strength. Confirmation must consider wire condition, deformation, heat treatment and tests on actual parts.
S43940 · ASTM A268/A268M-2024
Original-source verification is incomplete; this is not a formal standard reference
- Material category
- Stainless steel
- Subcategory
- Ferritic stainless steel
- Material form
- Reference record
- Verification status
- Reference data; original source not verified
Carbon-equivalent reference
Composition
| Element | Composition requirement |
|---|---|
| C | ≤ 0.03 (lower limit not stated) |
| Cr | 17.5 ～ 18.5 |
| Mn | ≤ 1 (lower limit not stated) |
| P | ≤ 0.04 (lower limit not stated) |
| S | ≤ 0.015 (lower limit not stated) |
| Si | ≤ 1 (lower limit not stated) |
| Ti | 0.1 ～ 0.6 |
Applicability and limitations
A match in the materials database does not establish suitability for cold heading or guarantee finished-product strength. Confirmation must consider wire condition, deformation, heat treatment and tests on actual parts.
S43940 · ASTM A554-2026
Original-source verification is incomplete; this is not a formal standard reference
- Material category
- Stainless steel
- Subcategory
- Ferritic stainless steel
- Material form
- Reference record
- Verification status
- Reference data; original source not verified
Carbon-equivalent reference
Composition
| Element | Composition requirement |
|---|---|
| C | ≤ 0.03 (lower limit not stated) |
| Cr | 17.5 ～ 18.5 |
| Mn | ≤ 1 (lower limit not stated) |
| P | ≤ 0.04 (lower limit not stated) |
| S | ≤ 0.015 (lower limit not stated) |
| Si | ≤ 1 (lower limit not stated) |
| Ti | 0.1 ～ 0.6 |
Applicability and limitations
A match in the materials database does not establish suitability for cold heading or guarantee finished-product strength. Confirmation must consider wire condition, deformation, heat treatment and tests on actual parts.
S43940 · ASTM A959-2004
Original-source verification is incomplete; this is not a formal standard reference
- Material category
- Stainless steel
- Subcategory
- Ferritic stainless steel
- Material form
- Reference record
- Verification status
- Reference data; original source not verified
Carbon-equivalent reference
Composition
| Element | Composition requirement |
|---|---|
| C | ≤ 0.03 (lower limit not stated) |
| Cr | 17.5 ～ 18.5 |
| Mn | ≤ 1 (lower limit not stated) |
| P | ≤ 0.04 (lower limit not stated) |
| S | ≤ 0.015 (lower limit not stated) |
| Si | ≤ 1 (lower limit not stated) |
| Ti | 0.1 ～ 0.6 |
Applicability and limitations
A match in the materials database does not establish suitability for cold heading or guarantee finished-product strength. Confirmation must consider wire condition, deformation, heat treatment and tests on actual parts.
S43940 · ASTM A959-2019
Original-source verification is incomplete; this is not a formal standard reference
- Material category
- Stainless steel
- Subcategory
- Ferritic stainless steel
- Material form
- Reference record
- Verification status
- Reference data; original source not verified
Carbon-equivalent reference
Composition
| Element | Composition requirement |
|---|---|
| C | ≤ 0.03 (lower limit not stated) |
| Cr | 17.5 ～ 18.5 |
| Mn | ≤ 1 (lower limit not stated) |
| P | ≤ 0.04 (lower limit not stated) |
| S | ≤ 0.015 (lower limit not stated) |
| Si | ≤ 1 (lower limit not stated) |
| Ti | 0.1 ～ 0.6 |
Applicability and limitations
A match in the materials database does not establish suitability for cold heading or guarantee finished-product strength. Confirmation must consider wire condition, deformation, heat treatment and tests on actual parts.