Material: Technical properties Steel strips are supplied to our customers in cold rolled condition, and Tokkin is able to supply various steel strips at different hardness level to match your needs.
The finishing conditions change continuously according to the rolling level. To understand them easily, we describe the finishing conditions to several types as the chart shown below. Since it may appear some differences in different steels and sizes, the following chart is just for reference. - Cold Rolled Special Steel Strip:

Surface Finishes	Finishing rolling reduction
Annealing finishing	(As annealing)
Skin pass	Within 5%
Roll up	15～40%
High rolling finishing	35%＜

Type of steel strip	condition	Hardness Test	Tensile Test
		HV	Tensile strength N／mm2	Elongation %
TE2 SK2ESR	Annealing	170 ～ 210	520 ～  685	20 ～ 32
	Skin pass	190 ～ 230	570 ～  715	10 ～ 28
	Roll up	250 ～ 290	735 ～  980	2 ～ 15
	High rolling	280 ～ 320	835 ～ 1080	1 ～  3
SK4ESR、SK4 LP4、TNS4 SUJ2. SEW4	Annealing	160 ～ 200	490 ～  645	24 ～ 35
	Skin pass	175 ～ 215	540 ～  695	12 ～ 32
	Roll up	245 ～ 285	725 ～  970	3 ～ 15
	High rolling	270 ～ 310	825 ～ 1040	1 ～  4
SK5 SKS5 SKS51	Annealing	15 ～ 0190	460 ～  625	26 ～ 37
	Skin pass	170 ～ 210	510 ～  685	15 ～ 35
	Roll up	240 ～ 280	725 ～  930	3 ～ 16
	High rolling	260 ～ 300	805 ～ 1000	1 ～  5
SK6 S 70 C	Annealing	145 ～ 185	440 ～  615	27 ～ 38
	Skin pass	160 ～ 200	490 ～  665	15 ～ 35
	Roll up	235 ～ 275	715 ～  920	3 ～ 16
	High rolling	255 ～ 295	795 ～  990	1 ～  5
SK7、LP7 S60C、S55C S50C、S45C S35C	Annealing	140 ～ 180	410 ～  610	28 ～ 39
	Skin pass	155 ～ 195	460 ～  655	16 ～ 36
	Roll up	230 ～ 270	705 ～  900	3 ～ 17
	High rolling	250 ～ 290	775 ～  970	1 ～  5
SKS2	Annealing	190 ～ 230	615 ～  715	20 ～ 30
	High rolling	280 ～ 320	835 ～ 1080	1 ～  3
SKS7	Annealing	200 ～ 240	645 ～  735	20 ～ 28
	High rolling	300 ～ 340	880 ～ 1125	1 ～  3
SUP6 SUP8	Annealing	170 ～ 210	520 ～  685	15 ～ 30
	High rolling	270 ～ 310	825 ～ 1040	1 ～  4
SUP10	Annealing	150 ～ 190	460 ～  625	26 ～ 37
	High rolling	250 ～ 290	735 ～  980	1 ～  5
SCM 435	Annealing	145 ～ 185	430 ～  615	28 ～ 43
	High rolling	230 ～ 270	685 ～  880	1 ～  6
SNC415 SCM415	Annealing	125 ～ 165	335 ～  540	28 ～ 50
	High rolling	200 ～ 240	655 ～  735	1 ～  8

 

- Cold Rolled Stainless Steel Strip:

Type of steel strip	condition	Hardness Test	Tensile Test
		HV	Tensile strength N／mm2	Elongation %
SUS301	Annealing	170 ～ 200	735 ～  930	45 ～ 60
	High rolling	500 ～ 550	1715 ～ 2060	1 ～  4
SUS304	Annealing	140 ～ 180	540 ～  706	47 ～ 62
	High rolling	390 ～ 430	1225 ～ 1420	1 ～  3
SUS420J2	Annealing	155 ～ 200	540 ～  655	20 ～ 30
	High rolling	280 ～ 320	880 ～ 1030	1 ～  3

Type	Mark	After Rolling					After Low Temp Tempering				Bending Process
		Hardness HV	Tensile Strength N/mm 2	Elongation %		Spring Limit N/mm 2	Hardness HV	Tensile Strength N/mm 2	Elongation %	Spring Limit N/mm 2
SUS301	SEH	≧530	≧1810	－	≧650		≧550	≧1940	－	≧880	－
	EH	≧490	≧1570	－	≧590		≧505	≧1665	－	≧785	－
	H	≧430	≧1320	－	≧490		≧440	≧1400	－	≧655	(Note3)4tR90° Bendable
	3/4H	≧370	≧1130	≧ 5	≧390		≧380	≧1175	≧ 4	≧540	2.5tR90° Bendable
	1/2H	≧310	≧ 930	≧10	≧315		≧315	≧ 960	≧ 8	≧390	2tR90° Bendable
	1/4H	≧250	≧ 860	≧25	－		≧253	≧ 880	≧20	－	1tR90° Bendable
SUS304	H	≧370	≧1130	－	≧390		≧385	≧1195	－	≧590	(Note3)2tR90° Bendable
	3/4H	≧310	≧ 930	≧ 3	≧335		≧320	≧ 970	≧ 2	≧430	2.5tR90° Bendable
	1/2H	≧250	≧ 780	≧ 6	≧275		≧255	≧ 805	≧ 4	≧315	2tR90° Bendable

[ Notes ]
1. Tensile Strength Test is based on No. JIS13B testing piece   
2. The coefficient of Repeat deflection test is 167,000N/mm²
3. Bending Process is based on bending with good condition.

• Exchange table for JIS and International standards
• Chemical compositions
• Properties
• Technical properties
• Hardness Conversion Table
• Thickness limit table for Vickers hardness test
• Elements influence
• Processing performance