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304DQ DDQ Cold Rolled Stainless Steel Coil

Huaxiao Capacity about 304 DQDDQ cold rolled stainless steel coil, 304 DQ DDQ CRC

Thickness: 0.2mm - 8.0mm
Width: 600mm - 2000mm, the narrowed products pls check in strip products
Max coil weight: 25MT
Coil ID: 508mm, 610mm
Finish: 2B, 2D
  • Advantage

304 DQ DDQ Same grade from different country standard

SUS304DQ  SUS304DDQ  S30408DQ  06Cr19Ni10DQ  0Cr18Ni9DQ  S30400DQ

304DQ DDQ Chemical component  ASTM A240:

C: ≤0.08 ,Si: ≤0.75 Mn: ≤2.0 ,Cr: 18.0~20.0, Ni: 8.0~10.5, S: ≤0.03 ,P: ≤0.045 N≤0.1

304DQ DDQ mechanical property ASTM A240:

Tensile strength: > 515 Mpa
Yield Strength: >205 Mpa
Elongation (%):  > 53%
Hardness: < HRB92

Description about DQ, DDQ and normal material

304 DQ DDQ material is widely be used as all kinds of stainless steel kitchenware,
DDQ (deep drawing quality) material refers to the material used for deep drawing (redrawing), which is what we call soft material. The main characteristic of this material is its high elongation (≧53%), hardness Low (≦170%), internal grain grade between 7.0~8.0, excellent deep drawing performance. Many companies that produce thermos and pots generally have higher processing ratios (BLANKING SIZE/product diameter), and their processing ratios are 3.0, 1.96, 2.13, and 1.98, respectively. SUS304DDQ material is mainly used for these higher processing ratios of the product, of course, the processing ratio of more than 2.0 products generally have to undergo a few passes to complete the stretch. If the raw material extension is not reachable, the product can easily produce cracks and pull-throughs when processing deep-drawing products, affecting the qualification rate of finished products, and of course, increase the cost of the manufacturers.

General materials: Mainly used for materials other than DDQ applications. This material is characterized by relatively low elongation (≧45%), relatively high hardness (≦180HB), and internal grain size grade of 8.0~9.0. Compared with DDQ material, its deep drawing performance is relatively poor. It is mainly used for products that can be obtained without stretching, like spoons, spoons, forks, electrical appliances, and steel pipes for a type of tableware. However, it has an advantage over DDQ materials in that BQ properties are relatively good, mainly due to its slightly higher hardness.

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