Alloy Or Not: | Is Alloy |
---|---|
Shape: | round |
Grade: | 4118/18crmo4/ 20CrMo/ DIN1.7218 |
Dimensions: | 14-200 |
Standard: | AISI,ASTM,BS,DIN,GB,JIS |
Quick Details
Specifications
4118/18crmo4/ 20CrMo/ DIN1.7218 Forged steel
Packaging & Delivery
Packaging Detail: Seaworthy Package
Delivery Detail: Within 10 - 45 days after confirmed
Specification shot forged steel round astm 4118/18crmo4/20crmo with good quality
1.Hot Forged: Dia 80mm-1500mm
2.forged round bar
hot forged steel round astm 4118/18crmo4/20crmo with good quality
1, APPLICATIONS:
usually being used at the quenched and tempered or case hardening state,for the manufacture of non-corrosive media and working temperature below 250 , the medium containing a mixture of nitrogen and hydrogen in the work of a variety of high-pressure pipes and fasteners, the higher the infiltration carbon components, such as gears, shafts and so on.
2, RELATED SPECIFICATIONS:
USA ASTM 4118
Japan JIS SCM420
China 20CrMo
4, Process: EAF+LF+VOD+Forged+Heat Treatment(optional)
5, SIZE RANGE:
Round:
Hot Forged: 80mm-1500mm
6, SURFACE FINISHES:
Black, Peeled(K12), Cold Drawn, Turned & Polished(H10, H11), Precision Ground(H9, H8)
7, Test: Ultrasonic test according to SEP 1921-84
Normalizing
Normalizing temperature: 860-900oC.
Hardening
Harden from a temperature of 850-880oC followed by oil or water quenching. Hardness after quenching is 39-47 HRC.
Tempering
Tempering temperature: 595-700oC.
Forging
Hot forming temperature: 1100-850oC.
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.
Packaging & Delivery
Packaging Detail: by customers' request
Delivery Detail: within one~two months after receive payment or L/C.
Specifications20CrMo
The higher hardenability non-temper brittleness
very good weldability
form cold cracking
small tendency