AISI 4140H Alloy Steel Chemical Composition & Properties, Grade, Charts and PDF Online
The AISI 4140H is a multifunctional steel-chromium molybdenum alloy famous for its exceptional toughness and great endurance. Usually, the chemical make-up of steel is comprised of between 0.38 to 0.43% carbon, 0.75 to 1.00% manganese, 0.15 to 0.30% silicon, and 0.80 to 1.10% chromium. Moreover, there are traces of phosphorus, sulfur, and The H suffix across signifies that it is the superior version due to the higher hardenability but a modification while vanadium is added. For its excellent machinability when annealed and high tensile strength, this steel grade can be machined in applications such as gears, shafts, and automotive components and so on. Numerous exhibits and PDF files are available online, explaining the elastic and heat treatment properties, the display being helpful to engineers and manufacturers to make material choices and processing.
AISI 4140H Alloy Steel Chemical Composition And Grade Table
AISI 4140H steel, which is very strong and tough, is often preferred over other alloys because of its high performance in several industries. Its chemical formula includes elements for example as chromium, molybdenum, manganese, silicon, carbon, phosphorus, sulfur and iron which are perfectly managed to make it better ASTM. Mostly suited for quench and temper processes, AISI 4140H steel offers high hardenability, abrasion strength, and fatigue endurance. Ranging from 28-32, HRC determines BS-AN type based on the ASTM A29/A29M. ASTM A322 is used for the same purpose. A conventional material superior in versatility and reliability for machining shafts, gears, pins, etc. is indicated due to its unique properties.
| Elements | Iron, Fe | Chromium, Cr | Manganese, Mn | Carbon, C | Molybdenum, Mo | Silicon, Si | Sulfur, S | Phosphorous, P |
|---|---|---|---|---|---|---|---|---|
| Min (%) | 96.585 | 0.75 | 0.65 | 0.37 | 0.15 | 0.15 | - | - |
| Max (%) | 97.93 | 1.2 | 1.1 | 0.44 | 0.3 | 0.3 | ≤0.040 | ≤0.035 |
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