SAE 3310 Hot Rolled Steel Bar , Modified Alloy Steel Round Bars , Delivery condtion QT

Steel group: Case hardening steel

Application: Highly stressed large sized components for aircraft and truck construction, and for general engineering purposes, e.g. gear wheels, cranks hafts, heavy-duty gear shafts.

Features: 20Cr2Ni4 is high intension of alloy cementation steel ,has excellent comprehensive mechanical property. It's hardenability and obdurability higher than 12CrNi3. It's excellent forgeability.

Related specifications:

Color of end: SIGNAL RED END

Quality Standard:
EN 10277 - 4 : 2008 Bright steel products. Technical delivery conditions. Case hardening steels
EN 10084 : 2008 Case hardening steels. Technical delivery conditions

Chemical Composition(%):

Process: EAF+LF+VOD+Rolled+Heat Treatment(optional)

SIZE RANGE:
Round:
Hot Rolled: 10mm –350mm

SURFACE FINISHES:
Black, Peeled (K12), Cold Drawn, Turned & Polished (H10, H11), Precision Ground (H9, H8)

Ultrasonic test: According to SEP 1921-84 3C/c

Range of application and heat treatment :
Cementation steel : gear wheels , crankshafts , gear components
Hardening : 830 - 850 °C (oil) Soft annealing : 620 - 650 °C Normalising : 830 - 860 °C

Certificate of Quality: issued in English, in addition the normal terms, production process, the mechanical property (yield strength, tensile strength, elongation and hardness), forged ratio, UT test result, Grain size, heat treatment methods and the sample of is shown on the Certificate of Quality.

Marking: Heat No. will be cold stamped and Steel grade, diameter (mm), length (mm), and the manufacturer LOGO and weight (kg) is painted

 We, Shanghai Unite Steel are committed to integrate engineering steel resources in china and serve the global engineering steel market. Our company has more than 15 years of experience in steel researching, production, managing and sales. And our team mostly are based on and worked in national famous steel enterprise.

In the aspect of resources and information, we have established cooperative and stronger relationship with nearly hundred enterprises, either state-owned or private owned in china, such as: DAYE Special Steel-a famous steel enterprise with the longest steelmaking history; BAO Steel, and Dongbei Special Steel Group-the biggest special steel manufacturer; TPCO, VALIN-largest seamless steel tube production enterprise; What's more, we have built long, deep and close business relationship with dozens of steel companies, Sharing and holding equities with several steel enterprises. Because of the close cooperation with steel companies and our pioneering spirit, which can ensure us stay at the top competition, and ensure our customers get what they really want!