Aceroinoxidable----Stainless Steel Grade 19-9 DL (UNS S63198)
Introduction
Stainless steel grade 19-9 decilitre could be a solution strong primary solid solution chrome steel.
This alloy is noted for its fine grain quality and stability in an exceedingly big selection of temperatures. It provides sensible resistance to not solely corrosion however conjointly brittle failure.
The characteristics of this material area unit quite almost like that of chrome steel grade 316.
The following sections can discuss well regarding chrome steel grade 19-9 decilitre.
Chemical Composition
The chemical composition of chrome steel grade 19-9 decilitre is made public within the following table.
|
Element |
Content (%) |
|
Chromium, Cr |
18 - 20 |
|
Nickel, Ni |
08-Nov |
|
Manganese, Mn |
1.5 - 0.75 |
|
Molybdenum, Mo |
1 - 1.75 |
|
Tungsten |
1 - 1.75 |
|
Silicon, Si |
0.3 - 0.8 |
|
Carbon, C |
0.28 - 0.55 |
|
Niobium (Nb) + Tantalum (Ta) |
0.25 - 0.6 |
|
Titanium, Ti |
0.5 max |
|
Iron, Fe |
Balance |
Physical Properties
The physical properties of chrome steel grade 19-9 decilitre area unit tabulated below
|
Properties |
Metric |
Imperial |
|
Density |
8.02 g/cm3 |
0.29 lb/in3 |
Other Designations
Other designations that area unit love chrome steel grade 19-9 decilitre embrace the subsequent
|
ASTM A477 (651) |
ASTM A458 (651) |
ASTM A457 (651) |
ASTM A453 (651) |
AMS 5579 |
|
AMS 5526 |
AISI 651 |
|
|
|
Fabrication and warmth Treatment
Machinability
For machining chrome steel grade 19-9 decilitre, slow speeds, constant feeds, and sensible amount of sulfuretted lubricants area unit needed for optimum results. Tough, "gummy" chips area unit made throughout machining which might be addressed exploitation chip breakers or curlers.
Heat Treatment
Being associate steel, chrome steel grade 19-9 decilitre doesn't answer heat treatment.
Welding
Stainless steel grade 19-9 decilitre are often simply welded exploitation all the standard strategies. Filler metal ought to be of matching chemistry therefore on optimize performance whenever necessary.
Annealing
Annealing are often performed by soaking at 982-1177°C (1800-2150°F), and so air cooled. For stress relieving, the fabric ought to be heated to 649°C (1200°F), and so command for sixty min and air cooled.
Forging
For formation this material, it's to be soaked utterly at 1177°C (2150°F) and so air cooled. Given ample hammer strength, this material are often solid all the way down to 677°C (1250°F).
Hot operating
This material are often simply solid, headed and upset.
Cold operating
This alloy are often with success cold worked exploitation most of the common strategies. just in case of severe operating, the fabric ought to be stress relief treated directly once forming at 649-704°C (1200-1300° F).
Hardening
Stainless steel grade 19-9 decilitre doesn\'t answer hardening by thermal treatment.
Applications
Stainless steel grade 19-9 decilitre utilized in applications wherever resistance to intergranular corrosion isn't a giant concern. it's conjointly utilized in varied reaction engine parts like manifolds, casings, buckets and fasteners.
Key Words: Stainless Steel Plates, Stainless Sheet 304, aceroinoxidable