ASTM Fittings Materials
Reference data and engineering information about astm fittings materials for standard organizations applications.
astmfittingsmaterials
Overview
Engineering reference data for ASTM Fittings Materials in standard organizations.
Key Formulas
ISO Standard
Quality management systems.
ASTM Standard
Standard test methods for tension testing.
ANSI Standard
Pipe flanges and flanged fittings.
Variables
| Symbol | Description | Unit |
|---|---|---|
| International Organization for Standardization | — | |
| American Society for Testing and Materials | — | |
| American National Standards Institute | — |
References
ASTM Material Cross Reference Table
The following table provides a cross reference of ASTM material specifications for fittings, flanges, unions, and cast and forged valves across different material grades and service conditions.
37 rows
material |
|---|
| Carbon Steel |
| Carbon Steel – Moderate/High Temp |
| Carbon Steel – Cold Temp |
| Carbon-½Mo Alloy Steel |
| Carbon-½Mo – High Temp |
| Carbon-½Mo – Cold Temp |
| ½Cr-½Mo Alloy Steel |
| ½Cr-½Mo-1 Alloy Steel |
| ¾Cr-1Mo-¾Ni Alloy Steel |
| 1Cr-½Mo Alloy Steel |
| 1Cr-1Mo-Vd Alloy Steel |
| 1¼Cr-½Mo Alloy Steel |
| 1¼Cr-½Mo-Vd Alloy Steel |
| 2¼Cr-½Mo-Vd Alloy Steel |
| 3Cr-1Mo Alloy Steel |
| 5Cr-½Mo Alloy Steel |
| 5Cr-½Mo-Si Alloy Steel |
| 7Cr-½Mo Alloy Steel |
| 9Cr-1Mo Alloy Steel |
| 13Cr Alloy Steel |
| Type 304 SS – Standard |
| Type 304 SS – Low Carbon |
| Type 304 SS – High Temp |
| Type 309 SS |
| Type 310 SS |
| Type 316 SS – Standard |
| Type 316 SS – Low Carbon |
| Type 316 SS – High Temp |
| Type 317 SS |
| Type 321 SS – Standard |
| Type 321 SS – High Temp |
| Type 347 SS – Standard |
| Type 347 SS – High Temp |
| Type 348 SS – Standard |
| Type 348 SS – High Temp |
| 20Ni-8Cr Alloy |
| 2 Nickel Alloy – Low Temp |
Source: Engineering ToolBox
Material Selection Notes
When selecting materials from this table, consider the following service conditions:
- High Temperature Service: Materials prefixed with "H" (e.g., 304H, 316H, 321H) are designed for elevated temperature applications with enhanced creep resistance
- Low Temperature / Cryogenic Service: Grades with "L" designation (e.g., LF1, LF2, LCB, WPL6) provide improved toughness at sub-zero temperatures
- Low Carbon Grades: The "L" suffix on stainless steels (e.g., 304L, 316L) indicates maximum 0.03% carbon, reducing susceptibility to intergranular corrosion after welding
ASTM Specification Prefix Meanings:
- *A105/A182/A350 — Forged fittings and flanges
- *A216/A217/A351/A352 — Castings
- *A234/A403/A420 — Wrought (butt-weld) fittings
- *A106/A312/A333/A671 — Pipe