Ningbo Ningshing Precision Machinery Group Co., Ltd.Who We AreNo.25 Hongxiang Rd A area Industry, Hongtang Jiangbei, Ningbo, 315033, Zhejiang Province, ChinaFormerly known as Ningbo Ningshing Special-Steel Group Co., Ltd., we are a holding subsidiary of Ningbo Ningshing Holdings Corporation.
After years of development, we have successfully realized the transformation of "industry supply chain ecosystem" from only trading to integrated operation, including distribution and retail, precision processing, intelligent manufacturing, vacuum heat treatment, technical services and international trade, etc.
As one of the largest special steel distribution enterprises in China with imported and homemade tool steel materials, Ningshing P
Ningbo Ningshing Precision Machinery Group Co., Ltd. is DIN 1.2550 tool steel stockholders and suppliers from china. Over 25 years experience in supplying DIN 1.2550 tool steel round bar, flat bar and plate.
DIN 1.2436 / AISI D6 Cold Work Tool Steel is used to make cold and hot working tools that withstand high pressure, impact and shocks. The blade made of this steel is very durable, strong hardening ability, very suitable for heat treatment.
Dimensions Round: dia.10-600 mm Hot Rolled Plate: 10-460 x 1600-2300 mm Forged Block: 150-500 x 200-1900 mm
Delivery ConditionEAF+LF+VD, Forged, Q+T, Black surface or Machined surface, UT SEP1921 Class3 D/d
DIN / W.Nr
Charecteristics 1. 1.2550 is cold work steel with very good toughness. 2. dimensionally stable, impact resistant and high hardening capacity.
Heat Treatment Annealing 720 to 750℃ Hardness after annealing: max. 230HB
Quenching 870 to 900 ℃ Quenching in oil
Tempering 180 to 300 ℃ After tempering hardness HRC | 100℃：60; After tempering hardness HRC | 200℃：58; After tempering hardness HRC | 300℃：56; After tempering hardness HRC | 400℃：52
Normailizing Normalizing temperature then cool in furnace