|PORT:||CHINA MAIN PORT||MOQ:||1 piece|
|Material:||Alloy forged steel shaft||Process:||hot forged+ heat treatment|
|Inspection:||The third party is acceptable||Testing:||Eddy test|
826M31/X9931/En25 Professional forged steel shaft/ forged steel part for mechnical purpose, OD: 80-1200mm
X9931 is suitable for the most severe duties where freedom from temper brittleness is necessary. It has high strength and toughness in large sections. Applications include heavy drive shafts, axles, gears, excavator pins, automotive, and general, engineering applications, such as Shafts, connecting rods, pump and gear shafts, Die Holder Blocks, and long wall coal mining roof support pins.
Australia AS 1444-2007 X9931
Germany W.Nr 1.6743 32NiCrMo10 4
Great Britain BS970: Part 3: 1991 826M31
BS970: 1955 EN25
Chemical Composition %:
Phosphorus 0.04 max
Sulphur 0.04 max
Process: EAF+LF+VOD+Forged+Heat Treatment(optional)
Hot Forged: 80mm-1200mm
Black, Peeled K12, Cold Drawn, Turned & Polished H10, H11, Precision Ground H9, H8
Test: Ultrasonic test according to SEP 1921-84 3Cc
Heat to 1150 oC - 1200 oC maximum, hold until temperature is uniform throughout the section.
Do not forge below 850 oC.
Following forging operation the work piece should be cooled as slowly as possible in sand or dry lime etc..