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ASTM A872 UNS J93550 Stainless Steel Pipe
Key Word:
Steel Pipe
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Standard:ASTM A872/A872M
Standard Specification for Centrifugally Cast Ferritic/Austenitic Stainless Steel Pipe for Corrosive Environments
ASTM A872 UNS J93550 Steel Pipe covers centrifugally cast ferritic/austenitic steel pipe intended for general corrosive service.
ASTM A872 UNS J93550 Steel Pipe are susceptible to embrittlement if used for prolonged periods at elevated temperatures.
ASTM A872 UNS J93550 Stainless Steel Pipe Quick Details
Company Name: beite steel pipe
Country/Region: China
Product Name：ASTM A872 UNS J93550 Stainless Steel Pipe
Manufacture：centrifugal casting process.
Outside Diameter：34mm——219mm
Wall thickness：5.4mm——21mm
Length：6000mm、12000m or specified length as require
Port of Shipment：Tianjin,China
Payment：L/C or T/T
Delivery: 7-15 days after payment
Package: Bundles (hexagonal),Wooden Boxes,Crates (steel/wooden)
Materials and Manufacture
Manufacture:
The pipes are made by the centrifugal casting process.
Machining
The pipes are machined on the inner surface and may be supplied either machined or unmachined in the outer surface.
Heat Treatment
All pipes shall be furnished in the heat-treated condition as shown in Table 1.
TABLE 1 Heat Treatment Requirements
| Grade | Condition | |
| Temperature, °F [°C] |
Quenching | |
| UNS J93550 | 1920–2100 [1050–1150] | Water quench or rapid cooling by other means |
Chemical Composition of ASTM A872 UNS J93550 Stainless Steel Pipe
| Element | Grade |
| UNS J93550 | |
| C | 0.030 |
| Mn | 2.0 |
| P | 0.040 |
| S | 0.030 |
| Si | 2.0 |
| Ni | 5.00–8.00 |
| Cr | 23.0–26.0 |
| Mo | 2.00–4.00 |
| N | 0.08–0.25 |
| Cu | 1.00 |
| Co | 0.50–1.50 |
Mechanical Properties of ASTM A872 UNS J93550 Stainless Steel Pipe
| Requirement | Grade |
| UNS J93550 | |
| Tensile strength, min, ksi [MPa] | 90 [620] |
| Yield strength, min, ksi [MPa] | 65 [450] |
| Elongation in 2 in. or 50 mm, min,% | 20 |
| Hardness, max: | |
| Brinell | 297 |
| Rockwell C | 31.5 |
Quality
The surface of the casting shall be examined visually and shall be free of cracks and hot tears.
Permissible Variations in Dimensions
Thickness—The wall thickness shall not vary over that specified by more than 1 ⁄ 8 in. [3 mm]. There shall be no variation under the specified wall thickness.
Packaging
Bundles (hexagonal),
Wooden Boxes,
Crates (steel/wooden)
The tubing be packaged or bundled in such a manner as to prevent damage in ordinary handling and transportation and identified by a tag with the name of the manufacturer, purchase order number, specification number and grade, and size.
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