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SAE 4140 | AISI 4140
UNS G41400 Chrome-Moly Alloy steel | Heat Treatment Alloy Steel | AISI 4140 Round Bars | AISI4140 Bright Bars | AISI 4140 Round Bar Supplier | SAE 4140  Round Bar Supplier | AISI 4140 Manufacturer | SAE 4140 Exporter | AISI 4140 Stockist | Dealer

The AISI 4140 properties include high tensile strength and hardness. AISI 4140 offers good wear and tear resistance in quenched and tempered conditions. AISI 4140 equivalent grades are SAE 4140 and UNS G41400. AISI 4140 hardness is more as compared to other steel grades. AISI 4140 offers high corrosion resistance due to which it is frequently for oil drilling. National Steel Industries provides AISI 4140 round bars, forged bars, bright bars and other sizes of premium quality.

 

Ready stock material of AISI 4140 in sizes 20mm to 190mm dia. Round bar supplier of AISI 4140 for over two decades. We are one of the most trusted manufacturer and exporter of AISI 4140 grade steel Bars. Heat Treatments such as normalizing, tempering, quenching, etc can be applied to AISI 4140. It is used to make chains, screws, gears, arms, rollers, and other machine parts. 

National Steel Industries is the most prominent supplier of AISI 4140 steel. Buy good quality SAE 4140 round bar and AISI 4140 sheets from us which are tested for a variety of parameters and delivered with a material test certificate for complete quality assurance. 

AISI 4140 Round Bars | SAE 4140 Round Bars | National Steel Industries | India | Mumbai

AISI 4140 Chemical Composition

The Chemical Composition of AISI 4140 contains a medium level of carbon content. The AISI 4140 has Mn content which imparts hardness to the material. The contents of P is reduced to 0.035% and S is reduced to 0.040 max as excess content of P and S can damage the quality of steel and can cause the alloys steel to break at low stresses. 

Element %Composition

C:    0.38/0.43
Mn:    0.75/1.00
P Max.:    0.035
S Max.:    0.04
Si:    0.15/0.30
Ni:    -
Cr:    0.80/1.10
Mo:    0.15/0.25

AISI 4140 Mechanical Properties

The SAE 4140 can withstand an extreme amount of stress. The Tensile strength of steel is high as compared to other grades of steel.​ The AISI 4140 or SAE 4140 has features like good ductility, extreme toughness, and good wear resistance in quenched and tempered conditions.

Property                     Value


Tensile Strength       655 MPa
Yield Strength         415 MPa
Bulk Modulus           140 GPa
Poisson's ratio         0.27-0.30

AISI 4140 Heat Treatments

Heat treatments applied on AISI 4140 round bars are annealing, quenching, hardening, normalizing, tempering, etc. Heat treatments can vary the mechanical properties of the SAE 4140 alloy steel. The AISI 4140 material is tested for a variety of parameters such as impact testing, mechanical testing, chemical analysis testing, bent testing, etc. Heat Treated AISI 4140 round bars are of very tensile strength and are used to make steel products. 

  • Core hardening

  • Intermediate annealing

  • Case hardening

  • Forging or hot rolling

  • Normalizing

  • Soft annealing 

  • Tempering

  • Carburising

What is AISI 4140 Alloy Steel?

AISI 4140 is an alloy steel grade of steel. AISI 4140 properties include high corrosion resistance. Due to its high hardness, AISI 4140 can be used in making machines. SAE 4140 equivalent steel grade is UNS G41400 and AISI 4140 alloy steel. National Steel Industries supplies AISI 4140 round bars, sheets and plates, forged bars, bright bars, flat bars, billets, etc. AISI 4140 products are available in ready stock.

AISI 4140 Round Bars | SAE 4140 Round Bars | National Steel Industries | India | Mumbai

National Steel Industries is one of the biggest suppliers, exporters and Stockist of AISI 4140 material.

Buy SAE 4140 at the best price from us which is tested for a variety of parameters and delivered with a material test certificate for complete quality assurance.

AISI 4140 PRODUCTS

AISI 4140 Round Bars | SAE 4140 Round Bars | National Steel Industries | Mumbai

AISI 4140 Round Bar | SAE 4140 Round Bar

AISI 4140 Flat Bars | SAE 4140 Flat Bars | National Steel Industries | India | Mumbai

AISI 4140 Flat Bars |SAE 4140 Flat Bars

AISI 4140 Forged Round Bars | SAE 4140 Round Bars | National Steel Industries | India | Mumbai

AISI 4140 Forged Round Bars | SAE 4140 Round Bars

AISI 4140 Plates | SAE 4140 Plates | National Steel Industries | India | Mumbai

AISI 4140 Plates | AISI 4140 Plates

AISI 4140 Bright Bars | AISI 4140 Bright Bars | National Steel Industries

AISI 4140 Bright Round Bars | SAE 4140 Bright Bars

AISI 4140 Sheets | SAE 4140 Sheets | National Steel Industries | India | Mumbai

AISI 4140 Sheets | SAE 4140 Sheets

LENGTHS OF ROUND BARS

Standard Length Bars are available in Sizes:
 

3m

6m

12m

The Length can be cut and customized as per the customer's requirements.

Sizes  national Steel Industries  India  Mumbai.png

Round Bars Size

Product Name 

  
AISI 4140 Hot Rolled Round Bars    

AISI 4140 Cold Rolled and Cold Drawn Round bars   
AISI 4140 Peeled Round Bars    

AISI 4140 Ground Round Bars    

AISI 4140 Polished Round Bars    

AISI 4140 Turned Round Bars    

AISI 4140 Forged Bars    

AISI 4140 Proof Machine Bars    

        Size


16mm dia to 250mm dia
3mm dia to 100mm dia
3mm dia to 65mm dia
3mm dia to 65mm dia
3mm dia to 65mm dia
10mm dia to 1200mm dia
30mm dia to 1500mm dia
30mm dia to 1500mm dia

Square Bars Size

Product Name 

AISI 4140 Hot Rolled Square Bars    
AISI 4140 Cold Drawn Square Bars

AISI 4140 Peeled Square Bars   
AISI 4140 Ground Square Bars    
AISI 4140 Polished Square Bars    
AISI 4140 Forged Square Bars    
AISI 4140 Proof Machine Bars   

        Size

10mm Square to 200mm Square
10mm Square to 80mm Square
5mm Square to 80mm Square
5mm Square to 80mm Square
5mm Square to 50mm Square
30mm Square to 1500mm Square
30mm Square to 1500mm Square

AISI 4140 APPLICATION

The AISI 4140 has a good machinability. It is used to make machine parts like Shafts, axels, crankshafts, Gears, Miling Spindle, Steel Roll. It is used to make shafts, screws, gears, spindles, Nut and Bolts, etc. Actions like Forging, Welding, Heat Treatment, Annealing, Cold Working, Hot Working, etc can be performed on it. 

The AISI 4140 has good corrosion resistance hence, the material is used in places like automobiles, aircrafts, railways, etc. The AISI 4140 also has very high tensile strength and so it is used to make machine parts which should not break even after application of high stress.

Machining Use of AISI 4140 Round Bars
Oil Rigs Uses AISI 4140 Round Bars | National Steel Industries | India | Mumbai
Shafts made from AISI 4140 Round Bars | National Steel Industries | India | Mumbai
Steel Pillar supports made from AISI 4140 Round Bars | National Steel Industries | India | Mumbai
Gears Made from Steel AISI 4140 Round Bars | National Steel Industries | India | Mumbai
AISI 4140 Round Bars uses to make Nut and Bolts

FAQ ON AISI 4140 STEEL

Q) What does AISI 4140 mean?

Ans: AISI 4140 steel comes under medium carbon low alloy Chrome-Moly steel. American Iron and Steel Institute is the full form of AISI in AISI 4140.  

Q) What is the SAE equivalent of AISI 4140?
Ans: SAE 4140 is the equivalent of AISI 4140. UNS G41400 is the also the equivalent of AISI 4140 low alloy steel.

We also Provide

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AISI 4140
 Suppliers of 4140 Alloy Steel 

As a result of its high hardness ranges and tensile strengths, AISI 4140 can generate considerable stress through normal operation. Strong, durable steel, AISI 4140 is the perfect choice for industrial applications. The steel is known for its high hardness. National Steel Industries offers round and forged bars as well as bright bars in a variety of shapes and sizes. In our inventory for AISI 4140, we carry an array of sizes.

 

In the market, we have established ourselves as one of the most trusted manufacturers and exporters of AISI 4140 grade steel bars. We offer bright and hot rolled AISI 4140 round bars.

AISI 4140 is heat treated by normalizing, tempering, and quenching. These mechanisms are used to manufacture a wide range of machine parts, such as chains, screws, gears, and rollers. As a result, 4140 is widely used in the shipbuilding, aerospace, mechanical engineering, oil, and iron and steel industries, among others. 

The National Steel Industries is one of the largest manufacturers of AISI 4140 steel. AISI 4140 round bars and AISI 4140 sheets are provided with materials testing certificates that ensure complete quality assurance. 

SAE 4140 Round Bar Supplier manufacturer exporter and stockist national steel industries mumbai india

National Steel Industries is one of the biggest suppliers, exporter and Stockist of AISI 4140 material at the best price. 

At Your service in

We are the leading supplier of AISI 4140 round bar supplier in  Mumbai,  Delhi,  Bangalore, Hyderabad, Ahmedabad, Chennai, Kolkata, Surat, Pune, Jaipur, Lucknow, Kanpur, Najpur, Indore, Thane, Bhopal, Visakhapatnam, Pimpri, Chinchwad, Patna, Vadodara, Ghaziabad, Ludhiana, Agra, Nashik, Ranchi, Faridabad, Meerut, Rajkot, Kalyan, Dombivli, Vasai, Virar, Varanasi, Aurangabad, Dhanbad, Amritsar, NaviMumbai, Allahabad, Howrah, Gwalior, Jabalpur, Coimbatore, Vijayawada, Jodhpur, Madurai, Raipur, Kota, Chandigarh, Guwahati, Solapur, Hubli, Dharwad, Mysore, Tiruchirappalli, Gurgaon, Bhubaneswar, Salem, Warangal, Mira, Bhayandar, Jalgaon, Guntur, Thiruvananthapuram, Bhiwandi, Saharanpur, Amravati, Noida, Jamshedpur, Bhilai, Cuttack, Firozabad, Kochi, NelloreBhavnagar, Dehradun, Durgapur, Asansol, Rourkela, Nanded, Kolhapur, Ajmer, Akola, Gulbarga, Jamnagar, Ujjain, Loni, Siliguri, Jhansi, Ulhasnagar, Sangli, Miraj, Kupwad, Mangalore, Kurnooi, Ambattur, Rajahmundry, Tirunelveli, Malegaon, Gaya, Udaipur, Kakinada, Muzaffarnagar, Bhatpara, Panihati, Latur, Dhule, Rohtak, Sagar, Korba, Bhilwara, Berhampur, Muzaffarpur, Ahmednagar, Kollam, Avadi, Kadapa, Anantapuram, Kamarhati, Bilaspur, Sambalpur, Shahjahanpur, Satara, Bijapur, Rampur, Shimoga, Chandrapur, Junagadh, Thrissur, Alwar, Bardhaman, Kulti, Nizamabad, Parbhani, Tumkur, Khammam, Uzhavarkarai, Bihar, Panipat, Darbhanga, Bally, Aizawl, Dewas, Ichalkaranji, Karnal, Bathinda, Jalna, Eluru, Barasat, Kirari, SulemanNagar, Purnia, Satna, Mau, Sonipat, Farrukhabad, Durg, Imphal, Ratlam, Hapur, Arrah, Anantapur, Karimnagar, Etawah, Ambarnath, Bharatpur, Begusarai, NewDelhi, Gandhidham, Baranagar, Tiruvottiyur, Pondicherry, Katni, Secunderabad, Naihati, Yamunanagar, Bidhannagar, Pallavaram, Bidar, Munger, Panchkula, Burhanpur, RaurkelaIndustrialTownship, Kharagpur, Dindigul, Gandhinagar, Hospet, NangloiJat, Malda, Ongole, Deoghar, Chapra, Haldia, Khandwa, Nandyal, Morena, Amroha, Anand, Bhind, Bhalswa, Jahangir, Pur, Madhy, amgram, Bhiwani, Berhampore, Ambala, Morbi, Fatehpur, Raebareli, , Khora, , Ghaziabad, Chittoor, Bhusawal, Orai, Vellore, Mehsana, Raiganj, Sirsa, Danapur, Serampore, Sultan, Pur, Majra, Guna, Jaunpur, Panvel, Shivpuri, Surendranagar, Dudhrej, Unnao, Chinsurah, Alappuzha, Kottayam, Machilipatnam, Shimla, Adoni, Udupi, Katihar, Proddatur, Mahbubnagar, Saharsa, Dibrugarh, Jorhat, Hazaribagh, Hindupur, Nagaon, Sasaram, Hajipur.

We are the leading supplier of SAE 4140 round bar supplier in 

  • USA

  • Turkey

  • Saudi Arabia

  • Qatar

  • UAE

  • Kenya

  • Singapore

  • South Korea

  • Austria

  • Belgium

  • Czechia

  • Denmark

  • Estonia

  • Finland

  • France

  • Germany

  • Greece

  • Hungary

  • Iceland

  • Italy

  • Chile

  • Latvia

  • Switzerland

  • Ukraine

  • United Kingdom

  • Canada

  • Bahrain

  • Israel

  • Thailand

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Products of SAE 4140

AISI 4140 ROUND BARS | AISI 4140 PIPES | AISI 4140 TUBES | AISI 4140 FORGED ROUND BARS | AISI 4140  SHEETS | SAE 4140  PLATES | AISI 4140  RODS | SAE4140  SQUARE BARS | AISI 4140  FLAT BARS | SAE4140  I BEAM | AISI 4140 ANGLE | AISI 4140 CHANNEL | AISI 4140 FLANGES 

National Steel Industries provides the best price and best quality for SAE 4140 round bars.