0Cr17Ni9Al grade stainless steel is an austenitic stainless steel known for its good corrosion resistance and thermal stability. This alloy is similar to the well-known 304 stainless steel but has a special composition that includes aluminum.
304 stainless steel welded tube
0Cr17Ni9Al Data Sheet
1. Grade
07Cr17Ni7Al precipitation hardening steel.
2. Chemical Composition
| C | Mn | Ni | Si | P | S | Cr | Al |
|---|---|---|---|---|---|---|---|
| ≤0.09 | ≤1.00 | 6.50 ~ 7.75 | ≤1.00 | ≤0.035 | ≤0.030 | 16.00 ~ 18.00 | 0.75 ~ 1.50 |
3. Application Scope
This kind of steel is mainly used in the manufacture of aircraft shells, structural parts, pressure vessels and components of missiles, jet engine parts, springs, diaphragms, bellows, antennas, fasteners, measuring instruments, and so on.
4. Physical properties
Tensile strength b (MPa) : solution ≤1030; Aging ≥1140 at 565℃; Age ≥1230 at 510℃
Condition yield strength 0.2 (MPa) : solution ≤380; Aging ≥960 at 565℃; Aging at 510℃ ≥1030
Elongation 5 (%) : solution ≥20; Aging ≥5 at 565℃; Aging ≥4 at 510℃
Section shrinkage (%) : 565℃ aging ≥25; Aging ≥10 at 510℃
Hardness: solution ≤229HB; Aging ≥363HB at 565℃; Aging ≥388HB at 510℃
Overview
The alloy is an austenite-martensitic precipitation-hardened stainless steel developed based on 18-8CrNi, also known as controlled phase change stainless steel. After solution treatment, the austenite is unstable and has good plasticity toughness, and workability. After adjustment, the carbonized phenological composition of austenite precipitation changes.
After martensitic transformation treatment, most of the tissues are transformed into low-carbon tempered martensite with good toughness. This state is the use of steel state, has a good medium temperature mechanical properties. Corrosion resistance is better than general martensitic stainless steel.