• Model NO.：18CrNiMo7-6 (1.6587) , 17CrNiMo6 , 18CrNiMo7
• Commodity：Forged Steel Round Bar
• Commodities：Forged Steel Square Bar
• Standards：18crnimo7-6 (1.6587)T 17CrNiMo6 17crnimo7 18ncd6 8
• MOQ：1PCS
• Transport Package：Standard Sea Worthy
• Specification：200-1000mm
• Origin：China
• Production Capacity：3000tons,Month

18CrNiMo7-617CrNiMo618NCD6820A1618NiCrMo717Cr2Ni2Mo51118CrNiMo717CrNiMo7      
6.Chemical composition of  18CrNiMo7-6 (1.6587) / 17CrNiMo6 / 18CrNiMo7 

C	Si	Mn	Ni	P	S	Cr	Mo
0.15 - 0.21	max   0.4	0.5 - 0.9	1.4 - 1.7	max   0.025	max   0.035	1.5 - 1.8	0.25 - 0.35

7.HEAT TREATMENT OF 18CrNiMo7-6 (1.6587) / 17CrNiMo6 / 18CrNiMo7  FORGED STEEL

• Soft Annealing: Heat 17CrNiMo6 to 650-700oC, cool slowly in furnace. This will produce a maximum Brinell hardness of 229.

• Normalizing: 850-880oC, air.
• Hardening: Carburising: 880-980oC. Core Hardening: 830-870oC, water. Case Hardening: 780-820oC, water.
• Tempering:Temperature: 150-200oC

8.Quality control:
1. Melting Process: EAF/BOF+LF+VD resulting in ingots
2. Both ends cut by saw
3. Ratio of forging:minimum 3:1
4. Grain size of final product: according to ASTM E112 more than 5,preferred more than 8
5. Ultrasonic test: As per SEP1921 Class C/c or D/d

9.MOQ: one piece per size/grade

10.Payment term: FOB CIF CFR EXW and so on

11.Delivery time : 7 to 30 days after deposit received.

12.Mark on both ends
Heat number, size, Length,grades, Weight,Origin (as per contract), or other as required

18CrNiMo7-6 (1.6587) / 17CrNiMo6 / 18CrNiMo7 Forged rough turned round bars / 18CrNiMo7-6 (1.6587)  forged rings / 18CrNiMo7-6 (1.6587) forged square steel bar / 18CrNiMo7 Forged rough turned round bars/ 17CrNiMo6  forged rough machined steel round square bar