Our to produce better steel-based products are the main used in industrial manufacturing various types Stainless SteelAISI 439LL plate,AISI 439LL Round Bar,AISI 439LL forgings,AISI 439LL suppliers, AISI 439LL Stock,AISI 439LL sheet, AISI 439LL flat bar, AISI 439LL pipe,AISI 439LL tube,AISI 439LL mould,AISI 439LL round ingot,AISI 439LL cold-rolled steel,AISI 439LL coil,AISI 439LL strap steel,AISI 439LL hot-rolled steel,AISI 439LL medium plate, AISI 439LL heavy plate,AISI 439LL shapped bar,AISI 439LL hexahedral bar,AISI 439LL,AISI 439LL slab ingot,AISI 439LL slab,AISI 439LL price,AISI 439LL square bar,AISI 439LL square steel,AISI 439LL wire.Extending the industrial all kinds of mechanical industrial parts machining and, at the same time, using fine heat treatment process,tempering,hardening,heating,bright annealing,rotary hearth.chemical composition and Improving mechanical properties of AISI 439LL.

Current Location:Home » Products » Stainless Steel » AISI 439LL

Product category


Data Table for:Products: Stainless Steel:AISI 439LL

AISI 439LL properties and heat treatment forged piece, Including AISI 439LL application and specifications, We have all specifications,Including AISI 439LL steel plate, AISI 439LL sheet, AISI 439LL square steel, AISI 439LL flat bar,AISI 439LL round bar,AISI 439LL 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 439LL 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: φ6-219 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 439LL and Standards

C(%): ≤0.014
Si(%): ≤1.00
Mn(%): ≤1.00
P(%)≤: 0.04
S(%)≤: 0.03
Cr(%): 17.0~19.0
Ni(%): ≤0.50
Mo(%): —

Machining performance

Download AISI 439LL 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.


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.


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.


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.

Hot tags:AISI 439LL steel plate, AISI 439LL sheet, AISI 439LL square steel, AISI 439LL flat bar,AISI 439LL round bar,AISI 439LL forgings