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AISI Steel

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AISI Steel properties and heat treatment forged piece, Including AISI Steel application and specifications, We have all specifications´╝îIncluding AISI Steel steel plate, AISI Steel sheet, AISI Steel square steel, AISI Steel flat bar,AISI Steel round bar,AISI Steel forgings, we can own production and sales.


Introduction to Our Products:

Specialized high quality steel

We have the advantages of equipment, technologies and price

forged/hot rolling/ extrusion of steel


We can produce the AISI Steel has the following specifications:

Round bar steel: 1mm to 3000mm

Square-shape steel: 1mm to 2000mm

Plate steel:0.1mm to 2500mm

Width: 10mm to 2500mm

Lenth: We can supply any lenth based on the customer's requirement.

Forging: Shafts with flanks/pipes/tubes/slugs/donuts/cubes/other shapes

Tubings: OD: ¤ć6-219 mm, with wall thickness ranging from 1-35 mm.

Finished goods condition: hot forging/hot rolling + annealing/normalizing + tempering/quenching + tempering/any conditions based on the customer's requirement

Surface conditions: scaled (hot working finish)/ground/rough machining/fine machining/based on the customer's requirement

Furnaces for metallurgical processing: electrode arc + LF/VD/VOD/ESR/Vacuum consumable electrode.

Ultrasonic inspection: 100% ultrasonic inspection for any inperfections or based on the customer's requirementExcellent service for all kinds of industries,with advantages of technologies, equipment and price.

We serve you with our honesty, integrity, and professionality.


Chemical composition % of the ladle analysis of grade AISI Steel and Standards

At Longhai steel we can supply you with AISI steel grades and also AISI equivalent grades to British & European standards. Please contact us with your specific requirements and we shall endeavour to help.
AISI steel grades (American Iron & steel Institute) are becoming increasingly popular in the UK, primarily due to their use in the oil and gas industry. We hold a comprehensive range of stock in AISI material and AISI equivalent specifications. Of AISI steel grades available the majority are as carbon steels and alloy steels.  AISI carbon steels and alloy steels are usually given a four digit number, the first two digits indicate the alloying element in the AISI specification and the last two digits indicate the amount of carbon in the specification. AISI materials grades are shown in the table below, as to how the four digit number indicates the type it refers to.

Carbon steel

10XX
Plain carbon steel , Mn 1.00% max
 
11XX
Resulphurised free cutting
 
12XX
Resulphurised - Rephosphorised free cutting
 
15XX
Plain carbon steel, Mn 1.00-1.65%
Manganese Steel
13XX
Mn 1.75%
Nickel Steel
23XX
Ni 3.50%
 
25XX
Ni. 5.00%
Nickel Chromium Steel
31XX
Ni 1.25%, Cr 0.65-0.80%
 
32XX
Ni 1.75%, Cr 1.07%
 
33XX
Ni 3.50%, Cr 1.50-1.57%
 
34XX
Ni 3.00%, Cr 0.77%
Molybdenum Steel
40XX
Mo 0.20-0.25%
 
44XX
Mo 0.40-0.52%
Chromium Molybdenum Steel
41XX
Cr 0.50-0.95%, Mo 0.12-0.30%
Nickel Chromium Molybdenum Steel
43XX
Ni 1.82%, Cr 0.50-0.80%, Mo 0.25%
 
47XX
Ni 1.82%, Cr 0.50-0.80%, Mo 0.25%
Nickel Molybdenum Steel
46XX
Ni 1.05%, Cr 0.45%, Mo 0.20-0.35%
 
48XX
Ni 0.85-1.82%, Mo 0.20-0.25%
Chromium Steel
50XX
Ni 3.50%, Mo 0.25%
 
51XX
Cr 0.27-0.65%
 
50XXX
Cr 0.80-1.05%
 
51XXX
Cr 0.50% C 1.00% min
 
52XXX
Cr 1.02%, C 1.00% minCr 1.45%, C 1.00%
Chromium Vanadium Steel
61XX
Cr 0.60-0.95%, V 0.10-0.15%
Tungsten Chromium Steel
72XX
W 1.75%, Cr 0.75%
Nickel Chromium Molybdenum Steel
81XX
Ni 0.30%, Cr 0.40%, Mo 0.12%
 
86XX
Ni 0.55%, Cr 0.50%, Mo 0.20%
 
87XX
Ni 0.55%, Cr 0.50%, Mo 0.25%
 
88XX
Ni 0.55% Cr 0.50% Mo 0.35%
Silicon Manganese Steel
92XX
Si 1.40-2.00%, Mn 0.65-0.85% Cr 0.65%
Nickel Chromium Molybdenum Steel
93XX
Ni 3.25%, Cr 1.20%, Mo 0.12%
 
94XX
Ni 0.45%, Cr 0.40%, Mo 0.12%
 
97XX
Ni 0.55%, Cr 0.20%, Mo 0.20%
 
98XX
Ni 1.00%, Cr 0.80%, Mo 0.25%

 

It is possible that AISI grades are quoted as SAE grades and it is often that AISI/SAE have the same steel identification number. The AISI range of steel specifications also includes stainless steels which are 3 digit numbers starting with either a 2, 3, 4, or 5. The most popular of these being the 300 series austenitic stainless grades, followed by the 400 series martensitic grades. Also stocked are AISI equivalent grades of tool steel and high speed steel. AISI tool steel and high speed steel specifications are usually designated with a letter followed by 1 or 2 digits. 



Machining performance

Download AISI Steel the mechanical properties of the report, the report provides detailed performance analysis and application. Download >>


Principal Design Features

One of the most widely used precipitation hardening grades in the business. While soft and ductile in the solution annealed condition, it is capable of high properties with a single precipitation or aging treatment. Characterized by good corrosion resistance, high harness, toughness and strength.


Machinability

Long, gummy chips characterize this alloys machinability. It can be machined in the annealed condition, however condition H1150M will yield best results. Post machining solution treatment of parts will be required prior to final hardening if machining in this condition.


Heat Treatment

CONDITION A--Soak at 1900 F (1038 C) for 30 minutes and cool below 60 F (16 C) for complete martensite transformation. CONDITION H 950- Treat Condition A material at 900 F(482 C) for 1 hour, air cool.. CONDITION H925, H1025, H1075, H1100, H1150- Soak solution treated material for 4 hours at specified temperature, air cool, CONDITION H1150M- Soak solution treated material at 1400 F (760 C) for 2 hours, air cool, then re-heat to 1150 F (620 C) for 4 hours and air cool.


Welding

Successfully welded by common fusion and resistance methods, this alloy should not be joined by oxyacetylene welding. AWS E/ER630 filler metal is recommended if required.


Forging

Soak for 1 hour at 2150 F (1177 C) prior to forging. Do not work below 1850 F (1010 C). Post-work solution treatment is required prior to final hardening.





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