AISI 4140 200 mm Steel Rod Alloy Solid Rod DIN1.7225 Hot Rolled Steel Round Bar

1. Supply Range for AISI alloy 4140 steel bar

4140 Steel Round Bar: diameter 8mm – 3000mm
4140 Steel Plate: thickness 10mm – 1500mm x width 200mm – 3000mm
4140 Steel Grade Square: 20mm – 500mm
Surface Finish: Black, Rough Machined, Turned or as per given requirements.

2. Common 4140 Steel Specifications

3. 4140 Steel Bar Chemical Composition

4. Mechanical Properties of AISI Alloy 4140 Steel Bar, Plates, Square

5. Forging

Preheat the steel carefully, heat to 1150 oC – 1200 oC maximum, hold until temperature is uniform throughout the section.
Do not forge below 850 oC.Following forging operation the work piece should be cooled as slowly as possible.

6. AISI 4140 Steel Grade Heat Treatment

• Annealing
  Heat ASTM 4140 steels to 800 oC – 850 oC, hold until temperature is uniform throughout the section and cool in furnace.
• Normalizing
  Heat steel alloy 4140 to 870 oC – 900 oC, hold until temperature is uniform throughout the section, soak for 10 – 15 minutes and cool in still air.
• Tempering
  Re-heat 4140 grade steel to 550 oC – 700 oC as required, hold until temperature is uniform throughout the section, soak for 1 hour per 25 mm of section, and cool in still air.

7. Hardening of AISI Alloy Steel 4140

AISI alloy 4140 steel bar, plate and square can be hardened by cold working, or heating and quenching.

SAE 4140 alloy steel is usually supplied ready heat treated to hardness in 18-22 HRC. If further heat treatment is required, then heat to 840 oC – 875 oC, hold until temperature is uniform throughout the section, soak for 10 – 15 minutes per 25 mm section, and quench in oil, water, or polymer as required.

8. Application of AISI alloy round 4140 steel bar

ASTM alloy 4140 steel bar, flat or plate material can be used for as wide variety of applications where greater toughness and wear resistance is needed over lower carbon grades. Typical applications for 4140 tool steel uses include Components, Adapters, Arbors,strippers, holder blocks, mold bases, ejectors, back up and support tooling, fixtures, jigs, molds, cams, drill collars, Axle Shafts, Bolts, Crankshafts,stubs, couplings, reamer bodies, axles, shafting, piston rods, rams, hydraulic machinery shafts, gears, sprockets, gear racks, chain links, spindles, tool bodies, tool holders, tie rods, Connection Rods, Chuck Bodies, Collets, Conveyor Pins & Rolls, Ejector Pins, Forks, Gears, Guide Rods, Hydraulic Shafts & Parts,Lathe Spindles, Logging Parts, Milling Spindles, Motor Shafts, Nuts, Pinch Bars, Pinions, Pump Shafts,boring bars,tracks, slides, wear strips or parts, forming dies, brake dies, trim dies, bolsters, machinery parts and components, etc.

1. who are we?
We are based in WUXI , China, start from 2012 ,sell to Domestic Market(70.00%),South America(6.00%),Southeast Asia(5.00%),Africa(5.00%),Mid East(5.00%),North America(00.00%),Eastern Europe(00.00%),Oceania(00.00%),Eastern Asia(00.00%),Western Europe(00.00%),Central America(00.00%),Northern Europe(00.00%),Southern Europe(00.00%),South Asia(00.00%). There are total about 11-50 people in our office.

2. how can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;

3.what can you buy from us?
Steel Material

4. why should you buy from us not from other suppliers?
We specialized in wear resistant Steel Plate,weather resistant steel plate,alloy steel plate,high strength steel plate,wear resistant composite plate, tank plate, high pressure vessel plate, ship steel plate.

5. what services can we provide?
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Jiangsu Mittel Steel Industrial Limited is located in Wuxi City, a beautiful city near Shanghai. Wuxi is close to Shanghai (BAO STEEL) ,Zhangjiagang (ZPSS),Ningbo (BAO XIN),KUN SHAN (DKSS), enjoy excellent geographic location and convenient water, land and air transportation. , Wuxi become the biggest stainless steel sheet ,plate and coil supply Centers in China. Jiangsu Mittel Steel Industrial Limited was established in 1998 years. as one of the largest stockists and manufacturers of industrial grade Stainless Steel products and derivatives in Wuxi ,We keep a stock of 50000 tons every month, so we can delivery goods in fast time.

Our company supplies cold/hot-rolled stainless steel sheets,stainless steel coils and stainless steel Plate to many steel factories from athome and abroad, including Shanxi Taigang Iron& Steel CO, . Ltd (TISCO)Zhangjiagang Pohang (ZPSS), Shanghai BAO STEEL, Ningbo Baoxin and steel factories in Taiwan area, Mainland Chinese and foreign countries and regions.

Our long-term business lines are 201.202.304(1.4301).304L.316.316L(1.4404).430.409L, 309S ,310S(1.4845).317L.904L.S31803(1.4462).S32750.S32760, Finish: 2B, BA, NO. 1 NO. 4, HL, 8K and so on...Meanwhile, our company is also engaged in the long-term supply of homemade & imported medium and thick plates, galvanized and carbon steel products.

Adhering to the principle of "quality first and customer foremost",our company will offer long-term service to nationwide manufacturers of household appliances, elevators, tableware, ornaments, tanks and machines. We can offer precise frosted wiredrawing, 8K mirror finishing and skim board oil-abrasion of various specifications at any time. The precisely-processed products will meet your requirements for high quality. Our company is a modern enterprise integrating distribution and storage.

If you are interested in any of our products or would like to discuss a custom order, please feel free to contact us. We are looking forward to forming successful business relationships with new clients around the world in the near future.