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Quality Control Standards

  • Degree of tempering on single-rolled materials

    JIS G3303 KS D3516
    Code Rockwell Hardness (HR30T) Code Rockwell Hardness (HR30T)
    t≤0.21mm 0.21mm<t≤0.28mm t>0.28mm
    T1 49±4 T50 53이하 52이하 51이하
    T2 52±4 T52 53±4 52±4 51±4
    T2.5 55±4 T55 56±4 55±4 54±4
    T3 57±4 T57 58±4 57±4 56±4
    T4 61±4 T61 62±4 61±4 60±4
    T5 65±4 T65 65±4 65±4 64±4
    T6 70±4 T70 70±4 70±4 69±4

  • Degree of tempering on double-rolled materials

    JIS G3303 KS D3516
    Code Rockwell Hardness (HR30T) Target durability rolling direction kgf/mm²(N/mm²) Code Average Rockwell Hardness Value 0.2% Average Durability
    DR-8 73±4 56(550) DR550 73±4 550±70
    DR580 74±4 580±70
    DR-9 76±4 63(620) DR620 76±4 620±70
    DR-9M 77±4 67(660) DR660 77±4 660±70
    DR-10 80±4 70(690) DR690 80±4 690±70

  • Tolerance of Tin Adhesion Amount

    Tinplate : Tin coating weight
    Designation #10 #25 #50 #75 #100 #10/25 #25/50 #25/75 #25/100 #50/75 #50/100 #75/100
    Nominal(g/m2) 1.1/1.1 2.8/2.8 5.6/5.6 8.4/8.4 11.2/11.2 1.1/2.8 2.8/5.6 2.8/8.4 2.8/11.2 5.6/8.4 5.6/11.2 8.4/11.2
    Minimum average(g/m2) 0.90/0.90 2.45/2.45 5.05/5.05 7.55/7.55 10.10/10.10 0.90/2.45 2.45/5.05 2.45/7.55 2.45/10.10 5.05/7.55 5.05/10.10 7.55/10.10

  • Surface Finishing

    Tinplate
    Product Code Finishing Feature
    Single-rolled B Bright Finish Ground a plate with fine whetstone to make a smooth surface.
    The plate can be processed once with hot-dip tin plating. On the raw plate or hot-dipped plate, coat with tin to create high-gloss surfaces.
    R Rough Surface Finish On the raw plate featuring regular lines made from whetstone grounding,
    process the hot-dip tin plating to create moderately glossy surfaces.
    S Silver Finish On the raw plate with raw and dull surfaces, process hot-dip tin plating to create moderately glossy surfaces.
    M Matte Finish Raw plate with dull and matte surfaces without processing the hot-dip tin plating.
    Double-rolled R Rough Surface Finish On the raw plate featuring regular lines made from whetstone grounding,
    process the hot-dip tin plating to create moderately glossy surfaces.

  • Production Size

    Single Reduced Double Reduced
    Thickness(mm) 0.17 ~ 0.60 0.15 ~ 0.36
    Width(mm) 700 ~ 980 700 ~ 980
    Length(mm) 460 ~ 1200 460 ~ 1200