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ASTM HM21A-T8

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ASTM HM21A-T8 properties and heat treatment forged piece, Including ASTM HM21A-T8 application and specifications, We have all specifications,Including ASTM HM21A-T8 steel plate, ASTM HM21A-T8 sheet, ASTM HM21A-T8 square steel, ASTM HM21A-T8 flat bar,ASTM HM21A-T8 round bar,ASTM HM21A-T8 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 ASTM HM21A-T8 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.

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Chemical composition % of the ladle analysis of grade ASTM HM21A-T8 and Standards

Chemical Composition
 
Element
Weight %
Al
 3.30 
Mn
 0.60 
Th
 2.00 
 
Mechanical Properties
 
Properties
 Conditions 
T (°C)
Treatment
Density (×1000 kg/m3)
1.78
25
 
Poisson's Ratio
0.35
25
 
Elastic Modulus (GPa)
44.8
25
 
Tensile Strength (Mpa)
235.0 
25 
T8 (sheet, plate) 
Yield Strength (Mpa)
170.0 (130.0) 
Elongation (%)
11.0 
Reduction in Area (%)
 
Note: Value in parentheses indicates yield strength for compression.
Shear Strength (MPa)
125 
25 
T8 (sheet, plate) 
 
Themical Properties
 
Properties
 Conditions 
T (°C)
Thermal Conductivity (W/m-K)
138.07 
 



Machining performance

Download ASTM HM21A-T8 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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