Steelo Fabrica upholds one of the largest inventories of ASTM A638 Gr.660 type 1 round bars, and our company also deals in other 660 grade round bars.
What is the chemical composition of the ASTM A638?
ASTM A638 is also known as an Iron-based nickel-chromium superalloy. In this alloy titanium and molybdenum, this element is added to enhance the overall properties. This alloy is typically a precipitation hardening steel used for high-temperature settings; that is why it is used as A286.
Table of Content
Other elements present in the alloy grade 660 round bars are listed below:
ASTM A638 round bar properties:
This Alloy 660 is a precipitation hardening austenitic stainless steel which is known for many properties. Its impressive strength works better at high temperatures up to 700 degrees Celsius.
Other names of these alloys are UNS S66286, A-286 alloy, and Alloy 660 as well. This material obtains its strength from a higher uniformity, and it also has an impressive yield strength minimum of 105,000 psi.
Our company offers customized Gr. 660 type 1 alloy round bars for various manufacturing client industries.
Certain Benefits of using ASTM A638 round bars:
• This alloy has higher creep stress and rupture properties when compared to other alloys.
• It is highly Ideal for elevated-temperature settings region.
• This alloy has the quality that it can overcome sensitization and intergranular corrosion.
• It can be used in higher temperature utilization
• It holds superior mechanical properties
Few applications areas of the grade 660 alloy:
A list of industries in which grade 660 alloy round bars are highly utilized are listed as below:
• Aerospace – piston engine manifolds
• Chemical Processing
• Expansion Joints
• Food Processing equipment and storage
• Petroleum Refining – polythionic acid service
• Waste Treatment – thermal oxidizers
• for ASME boiler and pressure vessel code applications
Specification : ASTM A638/ ASME SA638
Dimensions: DIN, EN, ASTM, JIS, ASME, BS, AISI
Round bar size : Diameter: 3-~800mm
Flat bar size : Thickness: 2 -100mm, Width: 10 to 500mm
Rectangular Bars Section : 3.0 to 12.0mm thickness
Billet Size: 1/2 to 495mm Diameter
Rectangles Size : 33 x 30mm to 295 x 1066mm
Hollow Bar : 32mm OD x 16mm ID to 250mm OD x 200mm ID)
Finish :Cold (bright) drawn, centreless ground, hot rolled, smooth turned, peeled, slit rolled edge, hot rolled annealed, Rough Turned, Bright, Polish, Grinding, Centreless Ground & Black
Surface : Hot Rolled Pickled, Bright, Sand Blasting Finished, Cold Drawn, Hairline,Polished
Condition : Hardened & tempered, annealed
Technique : Stainless Steel Cold Drawn, Hot Rolled, Forged Round Bar,Cold Rolled, Rod
Processing : Bar cutting to 650mm
Form : Rod, Round, Channel Bar, T-Bar, Flat Bar, Precision Ground Bar, Blocks, Square, Rings, Round Rod, Triangle, Hollow, Rectangle, Threaded, Hex (A/F), Profiles, Half Round Bar, Ingot, Billet, I/H Bar, Forging etc.
|BD||Bright drawn||SRE||Slit rolled edge|
|CG||Centreless ground||HF||Hot finished|
|CF||Cold finished||HRAP||Hot rolled annealed and pickled|
|P&T||Peeled and turned||RT||Rough turned/peeled|
|ST||Smooth turned||PR||Peeled and reeled|
|Min/Max||0,03-0,08%||13,5-16,0%||1,00-2,00%||1,00-1,50%||24,0-27,0%||max. 0,025%||max. 0,015%||max. 1,00%||1,90-2,30%||0,10-0,50%||Alg/tot 0,35; B 0,003-0,010%|
|Mechanical properties at temperatures|
|Yield point||Re (MPa)||>592||>580||>570||>560||>550||>530||>520||>510||>500||>490||>460||>430||>380||>295||>200|