Stainless Steel Round Bar

Product Details:

Grade 420 stainless steel is a high-carbon steel with a minimum chromium content of 12%. Like any other stainless steel, grade 420 can also be hardened through heat treatment. It offers good ductility in its annealed state and excellent corrosion resistance properties when the metal is polished, surface grounded or hardened. This grade has the highest hardness - 50HRC - among all the stainless steel grades with 12% chromium. Stainless steel grades that are similar to grade 420 stainless steels include martensitic steels such as the other versions of grade 420, having vanadium, sulphur and molybdenum in their composition, and the grade 440 series. Non-standard grade 420C has carbon content that is little higher than that of grade 420. Martensitic stainless steels are ones with high hardness and high carbon content. These steels are generally fabricated using methods that require hardening and tempering treatments. The operating conditions of martensitic steels are affected by loss of material’s strength at high temperatures, and decrease in ductility at negative temperatures. 

Key Properties:

• The following properties are mentioned for bar products in ASTM A276. The specification may not necessarily be similar for other forms, such as forgings and plate. 

Corrosion Resistence:

• Under hardened conditions, grade 420 steels are resistant to fresh water, alkalis, air, foods and mild acids. The steel grades with a smooth surface finish have excellent performance. The corrosion resistance properties of grade 420 will tend to fall under annealed conditions. The corrosion resistance of grade 420 is lower than that of the grade 430 Ferritic alloys with 17% chromium, grade 410 steels and other austenitic grades. 
• This steel grade finds application in cutlery such as carving knives, table knives and so on. Grade 420 steels have good corrosion resistance against food, but continuous exposure of metals to unwashed food substances can lead to pitting corrosion. 

Heat Resistance:

• Grade 420 stainless steels have a scaling resistance at temperatures of up to 650°C. However, temperatures above standard tempering temperature are not suitable for this grade. 

Heat Treatment:

• Annealing – Grade 420 stainless steels can be heated at temperatures from 840 to 900°C, followed by slow furnace cooling at 600°C and then air-cooling. 
• Process Anneal – Grade 420 can be annealed at 735 to 785°C and air-cooled. 
• Hardening – This process involves heating grade 420 steels at 980 to 1035°C, followed by air or oil quenching. Oil quenching is usually preferred for heavy metal sections. Tempering is performed at 150 to 370°C to achieve high hardness and good mechanical properties. Grade 420 should not be tempered between 425 and 600°C. 

Welding:

• Grade 420 stainless steels are welded using welding rods, coated with grade 420 metals, to achieve high-strength joints. During the process, steels are pre-heated at 150 to 320°C and post-heated to 610 to 760°C. In the “as welded” condition, parts are welded using grade 309 filler rods to achieve ductile joints. However, grade 309 electrodes or rods are recommended for welding grade 420 steels by AS 1554.6. 

Machining:

• Grade 420 steels can be easily machined in their annealed state, but they are difficult to machine having a hardness greater than 30HRC. One of the most readily available machined alternatives is the free-machining grade 416 steels. 

Applications:The key applications of grade 420 stainless steels include: 

• Shear blades
• Needle valves
• Surgical equipment
• Cutlery

ASTM A182 F51 Flange is made up of a duplex steel material. The material has both ferritic and austenitic qualities in the metallurgic microstructure. The tensile strength of the material is 620MPa and the minimum yield strength is 450MPa

A high performace nickel alloy used for severe corrosion environments. Excellent corrosion resistance to reducing and oxidizing environments. Well suited for hydrochloric and sulfuric acid environments. Strong resistance to stress corrosion cracking. Excellent mechanical properties at elevated temperatures

Product Details:

Inconel is a nickel-chromium-based superalloy often utilized in extreme environments where components are subjected to high temperature, pressure or mechanical loads. Inconel alloys are oxidation- and corrosion-resistant.

Nimonic is a registered trademark of Special Metals Corporation that refers to a family of nickel-based high-temperature low creep superalloys. Nimonic alloys typically consist of more than 50% nickel and 20% chromium with additives such as titanium and aluminium

13-8 is a precipitation-hardening stainless steel that has excellent strength, high hardness, superior toughness, and good corrosion resistance

Monel® is an alloy of nickel and copper that was first developed for commercial use in 1905. It is mainly used for its excellent corrosion and temperature resistance and is especially valued for applications in the marine and chemical processing industries

Nimonic is a registered trademark of Special Metals Corporation that refers to a family of nickel-based high-temperature low creep superalloys. Nimonic alloys typically consist of more than 50% nickel and 20% chromium with additives such as titanium and aluminium.

ASTM A182 F55 equates to UNS S32760. The origins of this grade can be traced back to the development of Zeron 100 by Platt & Mather, Manchester UK. It is another super duplex stainless steel based upon a 25% Cr composition, but with an addition of tungsten

Nickel is a silvery-white, hard, malleable, and ductile metal. It is a good conductor of heat and electricity. It is bivalent, that is it has a valency of two. The metal dissolves slowly in dilute acids.

Stainless steel is a corrosion-resistant alloy of iron, chromium and, in some cases, nickel and other metals. Completely and infinitely recyclable, stainless steel is the “green material” par excellence. In fact, within the construction sector, its actual recovery rate is close to 100%.

Hastelloy X is a solid-solution-strengthened nickel-chromium-iron-molybdenum alloy that combines good oxidation resistance, high-temperature strength and exceptional stress-corrosion resistance which makes this alloy also interesting for petrochemical applications.

Inconel is a nickel-chromium-based superalloy often utilized in extreme environments where components are subjected to high temperature, pressure or mechanical loads. Inconel alloys are oxidation- and corrosion-resistant.

INCONEL® alloy X-750 (UNS N07750/W. Nr. 2.4669) is a precipitation-hardenable nickel-chromium alloy used for its corrosion and oxidation resistance and high strength at temperatures to 1300°F

Inconel 825 Flanges also resist localized attack and avoid pitting and crevice corrosion. Moreover, they are also resistant to sulfuric and phosphoric acid. They can also resist aqueous corrosion and hence can be used in marine applications. The presence of titanium prevents sensitization at the grain boundary

A nickel alloy round bar is a type of steel with high nickel content (usually between 60% and 80%). This is valuable in construction, machinery, and aerospace industries to create parts that require high strength and resistance to corrosion. It can be manufactured as either a wire or sheet

Inconel 625 filler rod is an ideal product for joining metals and alloys with superior mechanical properties. It has excellent resistance to pitting, crevice corrosion and highly corrosive conditions