Product Standard Code

Standard	KS	ASTM	JIS	EN
-	-	-	-	-

Coating Weight (Unit : g/m²)

Application	Aim (g/m²)	Remark
Electrical and Electronic Parts (Tuner, Case, etc.)	3.0 : 1.0	For Shield Can
For The Crown (Beer Bottle Cap)	4.0 : 1.0
Home Appliances (TV, DVD, Microwave, etc.)	3.0 : 1.0
For General (18L, etc.)	3.0 : 1.0
For Fuel Tank	6.0 : 2.0
Ship and Train Parts	3.0 : 1.0

Oil Weight (Unit : mg/m²)

Symbol	Aim	Remark
D - 1	4.0	Printing, Lacquer
D - 2	8.0	For Plain
D - 3	12.5	For Plain
D - 4	Max 20	Special Usage

Chemical Treatment (Unit : mg/m²)

Symbol	Content	Aim	Application
300	Sodium Dichromate Dip	1.6	Food Can (Mushroom)
311	Cathodic Sodium Dichromate Low Coulombs	4.0	General Can, Food/Beverage Can
314	Cathodic Sodium Dichromate High Coulombs	10.0	Special Usage

BP Standard Code

Standard	KS	ASTM	JIS	EN
Code	D 3516 SPB	A 625	G 3303 SPB	10202

Classification

① Classification by Type of Steel

Type of Steel	Remark
MR (Medium Residual)	It contains few residual minor constituents and it is widely used for applications such as containers.
L (Low Metalloid Steel)	It contains particularly few residual minor constituents such as Cu, Ni, Cr, Mo, so that it is suitable for the materials of containers required improved corrosion resistance.
D (Drawing)	It is aluminum killed steel, so that it is suitable for the applications, which bear deep drawing, or other working that is liable to produce Luder’s lines pattern.

② Classification by Temper

The temper grade of SR(Single Reduced) BP(Black Plate) shall be expressed by the Rockwell Superficial Hardness values(HR30Tm).

Symbol		t ≤ 0.21mm	0.21mm < t ≤ 0.28mm	t > 0.28mm	Remark
T50	T1	≤53	≤52	≤51	-
T52	T2	53 ± 4	52 ± 4	51 ± 4
T55	T2.5	56 ± 4	55 ± 4	54 ± 4
T57	T3	58 ± 4	57 ± 4	56 ± 4	Electrical and Electronic Parts (Tuner, Case, etc.)
T61	T4	62 ± 4	61 ± 4	60 ± 4	For The Crown (Beer Bottle Cap)
T65	T5	65 ± 4	65 ± 4	64 ± 4	For The Crown (Beer Bottle Cap)

The hardness of less than 0.21mm in nominal thickness is normally tested using Rockwell 15T scale and results converted to Rockwell 30T scale

- The temper grade of DR(Double Reduced) BP(Black Plate) shall be expressed by the Rockwell Superficial Hardness Values(HR30Tm) or 0.2% Average Yield Strength

Symbol	Average Rockwell Superficial Hardness	0.2% average Yield Strength	Remark
DR450	68 ± 4	450 ± 70	Aerosol, Food Beverage Can
DR520	72 ± 4	520 ± 70	Aerosol, Food Beverage Can
DR550	73 ± 4	550 ± 70	Aerosol, Food Beverage Can
DR580	74 ± 4	580 ± 70	DRD, Food Beverage Can
DR620	76 ± 4	620 ± 70	DRD, Food Beverage Can
DR660	77 ± 4	660 ± 70	Food Beverage Can

③ Classification by Surface Finish

Product	Designation	Symbol		Remark	Aim (Ra/㎛)
		KS/JIS	TCC
SR	Bright Finish	B	BF	Blackplate finished to have a smooth surface with the use of temper-mill work rolls that have been ground to a low roughness	0.20~0.40
	Stone Finish	R	Rx	Blackplate finished to have a directional pattern with the use of final-mill work rolls that have been ground to a higher level of roughness than those used for the bright finish	0.38~0.58
	Silver Finish	S	D7	Blackplate finished to have a dull surface with the use of temper-mill work rolls with dull surface texture(Electrolytic tinplate with a luster finish provided by a flow-melted tin coating)	0.70~1.30
	Matt finish	M	D7	Blackplate finished to have a dull surface with the use of temper-mill work rolls with dull surface texture(Electrolytic tinplate with a luster finish provided by a flow-unmelted tin coating)	0.70~1.30
DR	Stone Finish	R	Rd	Blackplate finished to have a directional pattern with the use of final-mill work rolls that have been ground to a higher level of roughness than those used for the bright finish	0.25~0.45