SAE 4140 Alloy Steel
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The best SAE 4140 Alloy steel manufacturer and exporter is Tronixalloy.com. There are round, square, flat, block, and shaft options available. We have exported our products to many countries around the world. Our factory allows us to provide high quality products at a competitive price.If you want to buy or wholesale bulk AISI 4140 alloy steel in large quantities please contact us now. The prices and service we offer are unbeatable! We are happy to help if you need any information or help regarding our company. Looking forward to hearing from you soon
Low alloy steel SAE 4140 has 1% Cr-Mo as a strengthening alloy element and is defined as a low alloy steel. It has a higher carbon content than SAE 4140 Alloy steel, and it has good strength, toughness, abrasion and impact resistance, and heat treatment capabilities, but poor weldability. The hardness of AISI 4140 is typically 28-32 HRC, quenched and tempered. SAE 4140 Alloy steel is used to manufacture forgings with greater strength and a larger quenched cross section than 35CrMo steel, such as large gears for locomotive traction, supercharger transmission gears, rear axles, connecting rods and spring clips which are subject to great loads, as well as oil deep well drill pipe joints and salvage tools below 2000 metres.
SAE 4140 Alloy steel grade is a low-alloy steel including chromium and molybdenum as strengthening elements which has good strength and toughness, ductility,weldability and machinability.SAE 4140 Alloy steel is widely used in the automotive, agricultural ,oil and gas industry. Typical uses are forged gears and shafts, spindles, fixtures, jigs and collars.
Tronixalloy.com manufactures round bars and other products to meet customer demands. Our factories make these bars in varied shapes and sizes so that we can fulfil all
the needs and desires of customers. We manufacture our products keeping in mind the quality parameters and requirements set by the industry. These round bars are known best for their excellent features and quality.
We manufacture high-quality bars as per domestic as well as global specifications as per the requirement of the customer.We make use of top-notch quality of raw material and systems as per the needs of the customer. Kindly explore this website to know more about us.
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SAE 4140 Alloy steel Specification
100mm to 6000mm
5mm to 500mm
SAE 4140 Alloy Round Bar
EN-1A, EN-3B, EN-8, EN-9, EN-16, EN-18, EN-19, EN-24, EN-29B, EN-31, EN-32B, EN-36, EN-36C, EN-42J, EN-45, EN-47, EN-48A, EN-100, EN-111, EN-202, EN-352, EN-353, EN-1117 Etc.
High Speed Steel (HSS), HCHCR & OHNS in Grade:-
M2, M3, M35, M42, T-1, T-4, T-15, T-42, D2, D3, H11, H13, OHNS-01 & EN52
ASAE 4140 Alloy Round Bar Chemical Composition
|Min. %||Max %|
SAE 4140 Alloy Round Bar Physical Properties
|DENSITY (G/CM 3)||8.08|
|DENSITY (LB/IN 3)||0.292|
|MELTING POINT (°C)||1425|
|MELTING POINT (°F)||2600|
SAE 4140 Alloy Round Bar Mechanical Properties
|Mechanical Property Designation||R||S||S||*T||U||V||W|
|Limited Ruling Section mm||250||250||150||100||63||30||20|
|Tensile Strength Mpa||Min||700||770||770||850||930||1000||1080|
|0.2% Proof Stress Mpa||Min||480||540||570||655||740||835||925|
|Izod Impact J||Min||34||27||54||54||47||47||40|
|Charpy Impact J||Min||28||22||50||50||42||42||35|
|Hardness Brinell HB||Min||201||233||233||248||269||293||311|
*Material stocked generally in condition T
Check the test certificate if critical for end use.
SAE 4140 Alloy steel Physical Properties:
The physical properties of SAE 4140 Alloy steel are highlighted in the following table.
|Density||7.85 g/cm3||0.284 lb/in³<|
|7.85 g/cm3||0.284 lb/in³|
SAE 4140 Alloy steel Thermal Properties:
|Density||7.85 g/cm3||0.284 lb/in³|
Fabrication and Heat Treatment
The annealed condition of SAE 4140 alloy steel allows for good machinability.
The SAE 4140 alloy steel is highly ductile. Forming is possible with conventional techniques once it has been annealed. Due to its toughness, it requires more force or pressure to form.
Using all conventional welding techniques, SAE 4140 Alloy steel can be welded. Welding this steel in the heat-treated condition will affect its mechanical properties, so a post-weld heat treatment is recommended.
The SAE 4140 alloy steel is heated to 845°C (1550°F) then quenched in oil. By heating it at 913°C (1675°F) for a long period of time, followed by cooling with air, it can be normalised before hardening.
SAE 4140 Alloy steel is forged at 926 to 1205°C (1700 to 2200°F)
SAE 4140 Alloy steel can be hot worked at 816 to 1038°C (1500 to 1900°F)
When annealed, SAE 4140 alloy steel can be cold worked using conventional methods.
The SAE 4140 Alloy steel is annealed at 872°C (1600°F), then slowly cooled.
Depending on the desired hardness level, SAE 4140 Alloy steel can be tempered from 205 to 649°C (400 to 1200°F). A lower tempering temperature can increase the steel’s hardness. Tensile strength of 225 ksi can be achieved by tempering at 316°C (600°F), and 130 ksi can be achieved by tempering at 538°C (1000°F).
Alloy steel 4140 can be hardened by cold working or by heating and quenching.
A steel is heated above the ferrite to austenite transformation range and then cooled in air to well below it. Before final heat treatment, this treatment can be applied to forged products as a conditioning treatment. The normalising process also refines the structure of forgings that may have cooled unevenly after forging. For 4140 grade, the nominal normalising temperature is 1600 o F (870 o C), but production experience may require a temperature 50 o F (10 o C) higher or lower. The upper range of normalising temperatures is used when forgings are normalised before, say, carburizing or hardening and tempering. The lower temperature range is used when normalising is the final heat treatment.
SAE 4140 Alloy steel Application Industry
- Oil and Gas Pipeline
- Chemical Industry
- Oil & Gas Industry
- Water Supply Systems
- Paper & Pulp Industry
- Power Plant
- Fabrication Industry
- General purpose applications
- Food Processing Industry
- Structural Pipe
- Heat Exchangers
- industrial purpose etc.