4330V Mod Quenched and Tempered Steel

Product Details
Customization: Available
Type: Round
Standard: AISI, ASTM
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  • 4330V Mod Quenched and Tempered Steel
  • 4330V Mod Quenched and Tempered Steel
  • 4330V Mod Quenched and Tempered Steel
  • 4330V Mod Quenched and Tempered Steel
  • 4330V Mod Quenched and Tempered Steel
  • 4330V Mod Quenched and Tempered Steel
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Basic Info.

Model NO.
4330V MOD
Composition
Ferrous Steel Scrap
Technique
Hot Forged or Hot Rolled
Shape
Round,Flat or Square
Surface Treatment
Black Surface, Grinded,Peeled,Milled,Polished
Special Use
Alloy Structural Steel
Application
Structural Steel Bar
Size Range
Round Bar:Dia12~420mm Flat Bar:2~420 X 30~1500mm
Smelting Process
Ef, Eaf, ESR
Delivery Condition
Hot Rolled, Forged, Annealed,Quenched and Tempered
Surface Condition
Black Surface, Grinded,Peeled,Milled,Polished
Transport Package
Seaworth Packing
Specification
Round Bar: Dia12~420mm Flat Bar: 2~420 X 30~1500mm
Trademark
CHENGQUAN
Origin
Huangshi, Hubei
HS Code
7228600000
Production Capacity
5000tons/Year

Product Description

4330V Mod Quenched and Tempered Steel4330V Mod Quenched and Tempered Steel4330V Mod Quenched and Tempered SteelIntroduction

4330V alloy steel bar has hardenability that is improved with the addition of vanadium. In the heat treated condition 4330V has good fatigue strength and toughness. Machining is best when annealed, normalized and tempered. It also may be welded with traditional methods.

Applications

Drilling Equipment
Aircraft Landing Gear
Tool Holding Components
High Impact Machine Parts

Quality Standard

ASTM A29 Standard Specification for Steel Bars, Carbon and Alloy, Hot-Wrought, General
API 7 Specification for Rotary Drill Stem Elements.

Related Specifications

AMS 6427
SAE AMS 4330M
ASTM A646
UNS K23080

Chemical Composition(%)

C Mn Si P S Cr Ni Mo V
0.30-0.34 0.75-1.00 0.15-0.35 0.035 max 0.035 max 0.75-1.00 1.65-2.00 0.40-0.50 0.05-0.10

Mechanical Property Requirements

Tensile Strength Rm (KSI) Yield Strength R2 (KSI) Elongation(%) Reduction Ration (%) Izod Impact (J) Hardness (BHN)
160 min 160 min 15 min 321-375    

HEAT TREATMENT

Heat treatment temperatures, including rate of heating, cooling and soaking times will vary due to factors such as the shape and size of each steel component. Other considerations during the heat treatment process include the type of furnace, quenching medium and work piece transfer facilities.
Annealing:Heat the steel slowly to 820-860°C and allow enough time for the steel to be thoroughly heated. Cool slowly in the furnace to 580°C followed by air cooling.
Stress Relieving: When parts are heavily machined, ground or otherwise subject to cold work, stress relieving will be beneficial prior to hardening.
Hardening: 4330V steel is usually supplied ready heat treated to 35-39 HRc. If further heat treatment is required annealed 4330V should be heated slowly to 840-875°C and after adequate soaking at this temperature quench in oil. Temper as soon as the tools reach room temperature.
Tempering: Heat carefully to a suitable temperature selected by reference to a tempering chart or table, soak at the temperature for 2 hours per 25mm of ruling section, then allow to cool in air.

WORKABLITY

Forging: Preheat the steel carefully, then raise the temperature to 1070-1230°C for forging. Do not forge below 850°C. 4330V has good forging characteristics but care must be taken when cooling the steel due to its susceptibility to cracking. Cooling in ash or lime after forging is recommended.
Machining: Normalize and Temper at 1250°F(677°C) maximum prior to rough machine. This steel may also be machined at maximum strength, but machining must then be followed with a stress relieving at approximately 400°F(204°C).
Weldability: The steel has good welding characteristics and can be welded by resistance flash welding.

Mill′s test certificate

EN 10204/3.1 with all relevant data reg. chem. composition, mech. properties and results of testing.
 4330V Mod Quenched and Tempered Steel

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