Skip to main content

Complete Detaied Guide For 303 Austenitic Stainless Steel Bars




Alloy 303 is a non-magnetic, austenitic stainless steel that is not hardenable by heat treatment. It is the free machining modification of the basic 18% chromium / 8% nickel stainless steel.

Alloy 303 was specially designed to exhibit improved machinability while maintaining good mechanical and corrosion-resistant properties Due to the presence of sulfur in the steel composition,

Alloy 303 is the most readily machineable austenitic stainless steel; however, the sulfur addition does lower Alloy 303’s corrosion resistance to below that of Alloy 304. Like other austenitic grades, Alloy 303 demonstrates excellent toughness, although the sulfur does reduce this a little as well.

Ni - 9.00, Cr-18.00, Fe-Balance, Si -1.00, Mn-2.00, C - 0.120, 
P-0.040, S - 0.030

Key Properties

These properties are specified for the long product (bar) in ASTM A582. Similar but not necessarily identical properties are specified for other products such as wire and forgings in their respective specifications. Grade 303 is not produced in flat-rolled products.

Heat Resistance

Good oxidation resistance at temperatures up to 1700oF (927 oC)
Continuous use at temperatures above 1400oF (760oC) is not usually recommended due to carbide precipitation which can lead to irregular scaling
Does not have a low carbon content so it is also vulnerable to sensitization

Corrosion Resistance:

Good resistance to mildly corrosive atmospheres, but significantly less than Grade 304 due to the sulfur addition; the sulfide inclusions act as pit initiation sites. Grade 303 should not be exposed to marine or other similar environments, as these will result in rapid pitting corrosion. Because the sulfide inclusions in 303 are primarily aligned along the rolling direction the corrosion resistance is particularly reduced in cross-sections.

Grade 303, like other common austenitic stainless steels, is subject to stress corrosion cracking in chloride-containing environments above about 60°C.

Applications:

Typical applications include:

•         Nuts and Bolts
•         Bushings
•         Shafts
•         Aircraft Fittings
•         Electrical Switchgear Components
•         Gears
•         In general, any component that is heavily machined and where the corrosion resistance and fabrication properties of 303 are viable.



Labels:

Comments

Post a Comment

Popular posts from this blog

Stainless Steel Pump Shaft Quality Bars

Brief Guide For Stainless Steel Pump Shaft Quality Bars With so many stainless steel bars options in the market, it can be hard to choose the right stainless steel bars for pumps shafts. Industrial pumps require a stainless steel shaft with tight dimensional & straightness tolerance that can vary in shape depending on the application. Many pumps industry are facing an issue of high-quality stainless steel bars for shafts. Vishwa Stainless Pvt. Ltd. has manufactured a special range of stainless steel bright bars called Pump Shaft Quality (PSQ) bar which is peeled, ground and polished shafts used in pump applications. Our newly developed PSQ bars have tight dimensional & straightness tolerance. In our PSQ bars diameter tolerance & best surface finish achieved with the help of grinding and followed by polishing. 4 things which make our stainless steel bars high-quality PSQ bars for pumps shafts manufacturer. Heat Treatment Strength Tolerance Packing Vishwa ...
7 comments
Read more

17-4 PH Polished Round Bar – Features & Application

Stainless steels offer many unique advantages to wide industries. There are also numerous grades available, from which each stainless steel grade has its own set of advantages.   Today we are going to talk about one of the popular and highly efficient  17-4 PH stainless steel round bars. This hard metal has many unique features and properties that make it the best choice for many industrial applications.  17-4 PH stainless steel is the most used type of PH stainless steel, whether it is aerospace or the oil and gas industry; 17-4 PH polished round bars are chosen by wide industries.  So let’s learn everything about the 17-4 PH polished round bar, its features, applications, properties, and a lot more. 17-4 PH Polished Round Bar 17-4 PH polished stainless steel round bar is a precipitation hardened stainless steel alloy. It combines features of good corrosion resistance, high strength, and toughness. Due to its toughness, the 17-4 PH polished stainless steel bar ...
Post a Comment
Read more

Applications and Uses of Stainless Steel in Agricultural Sector

  Agriculture and farming is a tough sector that includes heat, dirt, chemicals, and various other harsh elements. Farming equipment can easily get corroded; hence, agricultural equipment like feeding pails, tractors, silos, and other essential equipment needs to be extremely efficient to meet the tough application demands. This is where stainless steel comes in. Stainless steel is one of the most reliable metals for manufacturing tougher, resilient agricultural equipment. It doesn’t rust and provides corrosion protection in the harsh environment of farming. And when it comes to hygiene and durability, stainless steel is the one everyone looks for. From food to chemicals, stainless steel is highly suitable for various industrial applications. Here in this blog, we will explore some of the top stainless steel applications in the agricultural sectors, the advantages of using stainless steel, and much more. Let’s begin to know. Why Stainless Is An Ideal Material For The Agricultural S...
Post a Comment
Read more