What is the difference between 8620 and 8620H?
What is the difference between 8620 and 8620H?
AISI/SAE 8720（UNS G86200）steel is a type of low carbon and low alloy structural steel containing chromium, nickel and molybdenum. The 8620 steel material could be case hardened, so the hardness could be different after hardening. So the AISI 8620H is the “H” condition of 8620 steel with required hardenability.
What is 8620H steel?
8620H Hot Rolled SBQ Bar Grade 8620H is a case hardening steel that retains strength, even at elevated temperatures. The “H” indicates the material meets hardenability according to ASTM A304. Eaton Steel Bar Company stocks many diameters of 8620H hot rolled steel bar available to meet the market demand.
Is 8620 a low alloy steel?
Principal Design Features AISI 8620 is a hardenable chromium, molybdenum, nickel low alloy steel often used for carburizing to develop a case-hardened part.
How strong is 8620 steel?
8620 Steel Mechanical Properties
| Properties | Metric | Imperial |
|---|---|---|
| Tensile strength | 530 MPa | 76900 psi |
| Yield strength | 385 MPa | 55800 psi |
| Elastic modulus | 190-210 GPa | 27557-30458 ksi |
| Bulk modulus (typical for steel) | 140 GPa | 20300 ksi |
How hard can you get 8620 steel?
8620 can be hardened to 1500° F followed by water quench. Carburize at 1650° – 1700° F in an appropriate carburizing medium and oil quench to harden. Tempering of carburized parts is done at 250° – 300° F and will result in the alloy having a core strength of approximately 135,000 psi minimum.
Can you weld 8620 steel?
8620 is excellent for welding applications.
What is ASTM A29?
ASTM A29 / A29M – 20 Standard Specification for General Requirements for Steel Bars, Carbon and Alloy, Hot-Wrought.
Will 8620 steel rust?
These 400°C tempered specimens can exhibit an ultimate tensile strength of 1100 MPa and a brittle-ductile transient temperature of -40°C. Besides, the 400°C tempered SAE 8620 steel is only susceptible to local attack of pitting corrosion and can exhibit an excellent corrosion resistance.
Is 8620 a tool steel?
8620 is a low carbon nickel chromium molybdenum alloy steel with good carburized properties. The nickel content contributes to a high strength case toughness and above average core toughness. The chromium and molybdenum support the proper formation of carbides resulting in good surface hardness and wear.
Is 8620 steel heat treatable?
AISI 8620 is an alloy carburizing steel when thermally treated develops a hard outer case with a soft ductile core.
What type of steel is 52100?
high carbon chromium alloy steel
52100 steel is a high carbon chromium alloy steel that has a density of 7.81 g/cm3 (0.282 lb/in3). It can be hardened via cold and hot working processes and responds to annealing and tempering and can be strengthened using the heat treatment process.
What is ASTM standard for steel?
ASTM steel grades are those that meet the exacting standards for specific grades of steel developed by the American Society for Testing and Materials. The standards include mechanical properties and steel chemistries and specify the testing methods to be used.
What are the main uses for 8620 carbon steel?
The steel alloy of grade 8620 is also called nickel-chromium-molybdenum steel. It is a sturdy alloy, largely composed of carbon, with many uses in the manufacturing trades. Properly hardened and formed, it can be used to make hard-wearing machine parts.
What is the tensile strength of 8620 steel?
8620 can be machines before carburizing and only finish machining after heat treatment of carburizing , usually limited to grinding. It has a tensile strength of 97,000PSI and yield strength of 57,000 PSI with elongation of 25%.
What is AISI 8620?
AISI 8620 is a hardenable chromium, molybdenum, nickel low alloy steel often used for carburizing to develop a case-hardened part.