ALLOY 28 PROPERTIES

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Alloy 28 Chemical composition (nominal) % Alloy 28 Mechanical properties Alloy 28 Physical properties Alloy 28 Corrosion resistance Alloy 28 properties Alloy 28 equivalent

Alloy 28 Forms of supply Alloy 28 Heat treatment Alloy 28 Welding Alloy 28 Fabrication Alloy 28 Applications Alloy 28 chemical composition

Alloy 28 properties

Alloy 28 properties

Specifications

The following specifications cover Stainless Steel Alloy 28(tm)
ASTM B668
ASTM B709
DIN 1.4563
UNS N08028

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Property Results
Related Metals:

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VLX928(tm)
Cabvalloy alloy VS-28(tm)
Nickelvac S-28(tm)
Nimofer 3127 LC(tm)
Cabvalloy VS-28(tm)

Chemistry Data

Carbon
Chromium
Copper
Iron		Balance
Manganese
Molybdenum
Nickel
Phosphorus
Silicon
Sulphur

Principal Design Features		This is a "super austenitic" stainless designed for resistance to phosphoric and sulfuric acids and seawater.
Applications		Applications include tubulars for downhole deep corrosive wells, pollution control, radiation waste systems, chemical handling equipment, valves pumps and piping.
Machinability		Conventional machining techniques used for iron based alloys may be used. Machining characteristics are somewhat similar to those for the austenitic (300 Series) stainless steels. This alloy does work-harden during machining and has higher strength and "gumminess" not typical of steels. Heavy duty machining equipment and tooling should be used to minimize chatter or work-hardening of the alloy ahead of the cutting. Most any commercial coolant may be used in the machining operations. Water-base coolants are preferred for high speed operations such as turning, grinding, or milling. Heavy-duty lubricants work best for drilling, tapping, broaching or boring. Rigid mounting of tooling and the workpiece are important to avoid "chatter".

Physical data

Density (lb / cu. in.)	0.29
Specific Heat (Btu/lb/Deg F - [32-212 Deg F])	0.11
Modulus of Elasticity Tension	28

Mechanical Data :

Form		Sheet
Condition		Annealed
Temper		70
Tensile Strength		80
Yield Strength		30
Elongation		35

Alloy 28 (Tube and Pipe, Seamless)

Datasheet updated 2015-02-16 10:39:36 (supersedes all previous editions)

Alloy 28 is a high-alloy multi-purpose austenitic stainless steel for service in highly corrosive conditions. The grade is characterized by:

• Very high corrosion resistance in strong acids
• Very good resistance to stress corrosion cracking (SCC) and intergranular corrosion in various environments
• High resistance to pitting and crevice corrosion
• Good weldability

Standard

• UNS N08028
• ISO 4563-080-28-I
• EN number 1.4563
• EN name X 1 NiCrMoCu 31-27-4
• W.Nr. 1.4563
• DIN X 1 NiCrMoCuN 31 27 4
• SS 2584
• AFNOR Z1NCDU31-27-03

Product standards

Seamless tube and pipe:	ASTM B 668; EN 10216-5; SEW 400 (Feb 1991); SS 14 25 84; NFA 49-217
Plate, sheet and strip:	ASTM B 709, EN 10088-2; SS 14 25 84
Bar steel:	EN 10088-3; SS 14 25 84
Fittings:	ASTM A 403 (chemical composition and mechanical properties according to ASTM B668)

Approvals

Approved by the American Society of Mechanical Engineers (ASME) for use in accordance with ASME Boiler and Pressure Vessel Code, section III, section I (Code Case 1325-18) and section VIII, division 1. VdTÃœV-Werkstoffblatt 483 (Austenitischer Walz- und Schmiedestahl) NACE MR 0103 (Materials Resistant to Sulfide Stress Cracking in Corrosive Petroleum Refining Environments) NACE MR0175/ISO 15156 (sulphide stress cracking resistant material for oil field equipment) NGS 1608 (Nordic rules for application) valid for Alloy 28 made by

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