439
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 439 →439 · SAE J405-1998
Chemical composition source verified; this does not verify every standard clause, actual supply or measured heat results
- Material category
- Stainless steel
- Subcategory
- Ferritic stainless steel
- Material form
- Reference record
- Original record status
- Original standard verified
- Standard edition
- SAE J405 JUN1998
- Table / clause
- Table 1, page 2 / page 5, notes 1–7
- PDF page references
- 1、4、5
Carbon-equivalent reference
Composition
| Element | Composition requirement |
|---|---|
| C | ≤ 0.07 (lower limit not stated) |
| Mn | ≤ 1.0 (lower limit not stated) |
| P | ≤ 0.04 (lower limit not stated) |
| S | ≤ 0.03 (lower limit not stated) |
| Si | ≤ 1.0 (lower limit not stated) |
| Cr | 17.0 ~ 19.0 |
| Ni | ≤ 0.5 (lower limit not stated) |
| N | ≤ 0.04 (lower limit not stated) |
| Al | ≤ 0.15 (lower limit not stated) |
| Ti | ≤ 1.1 (lower limit not stated) |
Applicability and limitations
Based on Table 1 of the original SAE J405 JUN1998; mass fraction wt%. Note 1: a value without a stated range or lower bound is a maximum; dashes mean unspecified and are not replaced with zero. Note 5: Cb and Nb refer to the same element. Verify alloy elements against the applicable UNS row and additional conditions. Note 4: carbon analysis is generally reported to 0.01%, or to 0.001% for low-carbon types. This is reporting precision and does not relax composition limits. Type names in original Table 1 may include common names or a ASTM naming footnote. Search aliases use only explicit same-row relationships; interchangeability across standards is not inferred. 1998 is the actual composition source. The requested newer edition has not been verified, and agreement between editions is not assumed. Ti≥0.2+4×(C+N), and ≤1.1; check jointly using measured composition from the same heat, not independent combinations of elemental maxima.
Combined limits
- Combined-element limits
- Requirement
- Ti≥0.2+4×(C+N), and ≤1.1
- Element coefficient
- Ti
- 1
- C
- -4
- N
- -4
- Lower limit
- 0.2
Verification notes
Composition and table notes were checked using the UNS correspondence in the original 1998 text.439 · SAE J405-2018
Chemical composition source verified; this does not verify every standard clause, actual supply or measured heat results
- Material category
- Stainless steel
- Subcategory
- Ferritic stainless steel
- Material form
- Reference record
- Original record status
- Historical-edition reference
- Standard edition
- SAE J405 JUN1998
- Table / clause
- Table 1, page 2 / page 5, notes 1–7
- PDF page references
- 1、4、5
Carbon-equivalent reference
Composition
| Element | Composition requirement |
|---|---|
| C | ≤ 0.07 (lower limit not stated) |
| Mn | ≤ 1.0 (lower limit not stated) |
| P | ≤ 0.04 (lower limit not stated) |
| S | ≤ 0.03 (lower limit not stated) |
| Si | ≤ 1.0 (lower limit not stated) |
| Cr | 17.0 ~ 19.0 |
| Ni | ≤ 0.5 (lower limit not stated) |
| N | ≤ 0.04 (lower limit not stated) |
| Al | ≤ 0.15 (lower limit not stated) |
| Ti | ≤ 1.1 (lower limit not stated) |
Applicability and limitations
Based on Table 1 of the original SAE J405 JUN1998; mass fraction wt%. Note 1: a value without a stated range or lower bound is a maximum; dashes mean unspecified and are not replaced with zero. Note 5: Cb and Nb refer to the same element. Verify alloy elements against the applicable UNS row and additional conditions. Note 4: carbon analysis is generally reported to 0.01%, or to 0.001% for low-carbon types. This is reporting precision and does not relax composition limits. Type names in original Table 1 may include common names or a ASTM naming footnote. Search aliases use only explicit same-row relationships; interchangeability across standards is not inferred. 1998 is the actual composition source. The requested newer edition has not been verified, and agreement between editions is not assumed. Ti≥0.2+4×(C+N), and ≤1.1; check jointly using measured composition from the same heat, not independent combinations of elemental maxima.
Combined limits
- Combined-element limits
- Requirement
- Ti≥0.2+4×(C+N), and ≤1.1
- Element coefficient
- Ti
- 1
- C
- -4
- N
- -4
- Lower limit
- 0.2
Verification notes
The current composition is based on the 1998 original. The specified newer edition has not been checked; equivalence between editions is not assumed.439 · 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 |
|---|---|
| Al | ≤ 0.15 (lower limit not stated) |
| C | ≤ 0.03 (lower limit not stated) |
| Cr | 17 ~ 19 |
| Mn | ≤ 1 (lower limit not stated) |
| N | ≤ 0.03 (lower limit not stated) |
| Ni | ≤ 0.5 (lower limit not stated) |
| P | ≤ 0.04 (lower limit not stated) |
| S | ≤ 0.03 (lower limit not stated) |
| Si | ≤ 1 (lower limit not stated) |
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.
439 · 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 |
|---|---|
| Al | ≤ 0.15 (lower limit not stated) |
| C | ≤ 0.03 (lower limit not stated) |
| Cr | 17 ~ 19 |
| Mn | ≤ 1 (lower limit not stated) |
| N | ≤ 0.03 (lower limit not stated) |
| Ni | ≤ 0.5 (lower limit not stated) |
| P | ≤ 0.04 (lower limit not stated) |
| S | ≤ 0.03 (lower limit not stated) |
| Si | ≤ 1 (lower limit not stated) |
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.
439 · 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 |
|---|---|
| Al | ≤ 0.15 (lower limit not stated) |
| C | ≤ 0.03 (lower limit not stated) |
| Cr | 17 ~ 19 |
| Mn | ≤ 1 (lower limit not stated) |
| N | ≤ 0.03 (lower limit not stated) |
| Ni | ≤ 0.5 (lower limit not stated) |
| P | ≤ 0.04 (lower limit not stated) |
| S | ≤ 0.03 (lower limit not stated) |
| Si | ≤ 1 (lower limit not stated) |
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.
439 · ASTM A959-2004
Original-source verification is incomplete; this is not a formal standard reference
- Material category
- Stainless steel
- Subcategory
- Martensitic stainless steel
- Material form
- Reference record
- Verification status
- Reference data; original source not verified
Carbon-equivalent reference
Composition
| Element | Composition requirement |
|---|---|
| Al | ≤ 0.15 (lower limit not stated) |
| C | ≤ 0.03 (lower limit not stated) |
| Cr | 17 ~ 19 |
| Mn | ≤ 1 (lower limit not stated) |
| N | ≤ 0.03 (lower limit not stated) |
| Ni | ≤ 0.5 (lower limit not stated) |
| P | ≤ 0.04 (lower limit not stated) |
| S | ≤ 0.03 (lower limit not stated) |
| Si | ≤ 1 (lower limit not stated) |
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.
439 · 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 |
|---|---|
| Al | ≤ 0.15 (lower limit not stated) |
| C | ≤ 0.03 (lower limit not stated) |
| Cr | 17 ~ 19 |
| Mn | ≤ 1 (lower limit not stated) |
| N | ≤ 0.03 (lower limit not stated) |
| Ni | ≤ 0.5 (lower limit not stated) |
| P | ≤ 0.04 (lower limit not stated) |
| S | ≤ 0.03 (lower limit not stated) |
| Si | ≤ 1 (lower limit not stated) |
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.
439 · ASTM A959-2019
Original-source verification is incomplete; this is not a formal standard reference
- Material category
- Stainless steel
- Subcategory
- Martensitic stainless steel
- Material form
- Reference record
- Verification status
- Reference data; original source not verified
Carbon-equivalent reference
Composition
| Element | Composition requirement |
|---|---|
| Al | ≤ 0.15 (lower limit not stated) |
| C | ≤ 0.03 (lower limit not stated) |
| Cr | 17 ~ 19 |
| Mn | ≤ 1 (lower limit not stated) |
| N | ≤ 0.03 (lower limit not stated) |
| Ni | ≤ 0.5 (lower limit not stated) |
| P | ≤ 0.04 (lower limit not stated) |
| S | ≤ 0.03 (lower limit not stated) |
| Si | ≤ 1 (lower limit not stated) |
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.