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HR, ST, CG & CD Bars
1. General specifications:
2. Characteristics and Uses of the Stainless Steel Bar:
3. Dimension and Tolerance of Hot-Rolled Round Bar (GB/T702):
4. Dimension and Tolerance of Cold forgad Bar (GB/T908):
5. Dimension and Tolerance of Cold-drawn Round, Square and Hexagon Bar(GB/T905):
6. Round Steel ISO Tolerence “h Series” in Millimeters ISO 286-2 Round Bar Tolerence:
|
Main products
|
Greades
|
Size(mm)
|
Length(mm)
|
Standard
|
|
|
Hot rolled bars
|
303, 303Cu, 304/L, 316/L,310S, 321, 410, 420, 416, 17-4PH, 201Cu | 15 / 16 / 18 / 20 / 22 / 25 / 28 / 30 / 32 / 35 / 40 / 45 / 50 / 55 / 60 / 65 / 75 / 90 / 105 / 125 / 130 / 150 |
4000-7500
|
GB JIS
ASTM EN DIN |
|
|
Peeled bars
|
303, 303Cu, 304/L, 316/L,310S, 321, 416, 17-4PH, 201Cu | 15-300 |
2000-7500
|
GB JIS
ASTM EN DIN |
|
|
Cold forged bars
|
303, 303Cu, 304/L, 316/L,310S, 321 | 150 / 200 /240 / 250 / 300 |
2000-7500
|
GB JIS
ASTM EN DIN |
|
|
CD bars
|
Round bars
|
303, 303Cu, 304/L, 316/L, 321, 416, 17-4PH, 201Cu | 2-90 |
2000-7500
|
GB JIS
ASTM EN DIN |
|
Square bars
|
303, 303Cu, 304/L, 316/L, 321, 416, 17-4PH, 201Cu | 5-50 |
2000-7500
|
GB JIS
ASTM EN DIN |
|
|
Hex bars
|
303, 303Cu, 304/L, 316/L, 321, 416, 17-4PH, 201Cu | 5-50 |
2000-7500
|
GB JIS
ASTM EN DIN |
|
|
CG bars
|
303, 303Cu, 304/L, 316/L, 321, 416, 17-4PH, 201Cu | 2-90 |
2000-7500
|
GB JIS
ASTM EN DIN |
|
2. Characteristics and Uses of the Stainless Steel Bar:
|
Categories |
Grade |
Characteristics |
Use |
|
Civil instrument |
304 |
The stainless steel has the widely use, good anti-corrosion, heat-resisting,low-temperature strength and machine characteristics;it can be punched and bend well when it is hot working, and its hardering will not to be happened.(non-magnetism, the temperature between -196℃ to 800℃). | Household appliances(type 1, 2 are tableware, cupboard, indoor pipelining, heater, boiler, bathtub),the parts for car(windshield wiper, filtering, moldering), medical appliances, building materials, chemistry, food industry, agriculture, ship parts. |
|
Automatic lathe |
303 |
It will be good free-cutting to add S in the base of 304 . | Use to the parts which has high quality free-cutting, such as the parts for electronics. |
|
303CU |
It will be shapped well to add S in the base of 303. | Use to the parts which has high quality free-cutting, such as the parts for electronics. | |
|
Bearing and automatic lathe |
303 |
It will be good free cutting to add S in the base of 304 . | The bearing for OA furniture/for civil and the shaft for driving and puddler/for high quality pump. |
|
304 |
The stainless steel has the widely use, good anti-corrosion, heat-resisting,low-temperature strength and machine characteristics;it can be punched and bend well when it is hot working, and its hardening will not to be happened by heat-treatment.(non-magnetism, the temperature between -196℃ to 800℃). | ||
|
416 |
Free cutting will have a good comprehensive performance to add S by heat-treatment. | ||
|
Forging,machine work |
304L |
The low C for the grade of 304, on the common condition, its anti-corrosion is same as Type 304, but its capacity of anti-corrosion in the crystal is excellent afterwards weld or dispel stress. it will keep anti-corrosion when it has not heat-resistanted, the temperature between -196℃ to 800℃. | Apply for field machines in chemisty,coal industry,oil industry which must be high quanlity anti-corrosion in crystal,for heat-resistanted parts in building and for the parts which difficult to heat-resisting. |
|
316 |
If add Mo in it, its anti-corrosion, anti-corrsion by air and hyperthermia strength are specially good, it can be used in a cruel environment and its hardness will be improved by cold finish (non-magnetism). | For equipments which in the sea, chemistry, dye processing, papermaking,oxalic acid, fertilizer, photography, food industry, the facilities of coastal regions, for rope, CD pole, bolt, nut. | |
|
Driving shaftdriving shaft |
304N |
Compared with 304, it is added N for high strength which use in the structure parts. | The shaft for the pump and ship. |
|
316N |
For high strength which use in structure parts. | ||
|
Chemical oil and pressure vessel. |
316L |
The low-C series for the grade of 316 ,its anti-corrosion in crystal is excellent, besides the characteristics of the grade 316. | Use in the grade of 316 which has special requirment in anti-corrosion in crystal. |
|
Aviation and boiler |
321 |
Add the element Ti into the grade of 304 to avoid corrosion in the crystal,its temperature between 430℃ to 900℃. | Aircraft, exhaust guide, boiller. |
|
The bearing and the structure parts. |
630 (17-4) |
Maraging stainless steel, high strength and anti-lashed; it will get varied characterstics of the strength by the different heat treatment's way. | High strength bearing and the structure parts. |
|
XM-19 |
Austenite stainless steel includes N and microelement. |
3. Dimension and Tolerance of Hot-Rolled Round Bar (GB/T702):
|
Diameter
|
Precision Tolerance
|
||
|
ⅠLevel
|
ⅡLevel
|
ⅢLevel
|
|
|
> 20 - 30
|
± 0.30
|
± 0.40
|
± 0.50
|
|
> 30 - 50
|
± 0.40
|
± 0.50
|
± 0.60
|
|
> 50 - 80
|
± 0.60
|
± 0.70
|
± 0.80
|
|
> 80 - 110
|
± 0.90
|
± 1.00
|
± 1.10
|
|
> 110 - 150
|
± 1.20
|
± 1.30
|
± 1.40
|
|
> 150 - 200
|
± 1.60
|
± 1.80
|
± 2.00
|
|
> 200 - 280
|
± 2.00
|
± 2.50
|
± 3.00
|
|
> 280 - 310
|
± 2.50
|
± 3.00
|
± 5.00
|
4. Dimension and Tolerance of Cold forgad Bar (GB/T908):
|
Diameter
|
Precision Tolerance
|
|
|
ⅠLevel
|
ⅡLevel
|
|
|
> 120 - 140
|
-1.5 - +3.0
|
-1.5 - +3.5
|
|
> 140 - 160
|
-2.0 - +3.0
|
-2.0 - +4.0
|
|
> 160 - 180
|
-2.0 - +4.0
|
-2.0 - +5.0
|
|
> 180 - 200
|
-2.0 - +5.0
|
-2.0 - +6.0
|
|
> 200 - 220
|
-3.0 - +5.0
|
-3.0 - +6.0
|
|
> 220 - 240
|
-3.0 - +6.0
|
-3.0 - +7.0
|
|
> 240 - 260
|
-3.0 - +7.0
|
-3.0 - +8.0
|
|
> 260 - 300
|
-3.0 - +8.0
|
-3.0 - +9.0
|
5. Dimension and Tolerance of Cold-drawn Round, Square and Hexagon Bar(GB/T905):
|
Size
|
Tolerance
|
|||||
|
8 - H8
|
9 - H9
|
10 - H10
|
11 - H11
|
12 - H12
|
13 - H13
|
|
|
3
|
0 - 0.014
|
0 - 0.025
|
0 - 0.040
|
0 - 0.060
|
0 - 0.10
|
0 - 0.14
|
|
> 3 - 6
|
0 - 0.018
|
0 - 0.030
|
0 - 0.048
|
0 - 0.075
|
0 - 0.12
|
0 - 0.18
|
|
> 6 - 10
|
0 - 0.022
|
0 - 0.036
|
0 - 0.058
|
0 - 0.090
|
0 - 0.15
|
0 - 0.22
|
|
> 10 - 18
|
0 - 0.027
|
0 - 0.043
|
0 - 0.070
|
0 - 0.110
|
0 - 0.18
|
0 - 0.27
|
|
> 18 - 30
|
0 - 0.033
|
0 - 0.052
|
0 - 0.084
|
0 - 0.130
|
0 - 0.21
|
0 - 0.33
|
|
> 30 - 50
|
0 - 0.039
|
0 - 0.062
|
0 - 0.100
|
0 - 0.160
|
0 - 0.25
|
0 - 0.39
|
|
> 50 - 80
|
0 - 0.046
|
0 - 0.074
|
0 - 0.120
|
0 - 0.190
|
0 - 0.30
|
0 - 0.46
|
6. Round Steel ISO Tolerence “h Series” in Millimeters ISO 286-2 Round Bar Tolerence:
|
Nominal Size
Diameter (mm) |
H5
|
H6
|
H7
|
H8
|
H9
|
H10
|
H11
|
H12
|
|
1 - 3
|
-0.004
|
-0.006
|
-0.01
|
-0.014
|
-0.025
|
-0.04
|
-0.06
|
-0.100
|
|
(-0.00016″)
|
(-0.00024″)
|
(-0.00039″)
|
(-0.00055″)
|
(-0.00098″)
|
(-0.00158″)
|
(-0.00236″)
|
(-0.00394″)
|
|
|
> 3 - 6
|
-0.005
|
-0.008
|
-0.012
|
-0.018
|
-0.03
|
-0.048
|
-0.075
|
-0.0120
|
|
(-0.00020″)
|
(-0.00032″)
|
(-0.00047″)
|
(-0.00071″)
|
(-0.00118″)
|
(-0.00189″)
|
(-0.00295″)
|
(-0.00472″)
|
|
|
> 6 - 10
|
-0.006
|
-0.009
|
-0.015
|
-0.022
|
-0.036
|
-0.058
|
-0.09
|
-0.150
|
|
(-0.00024″)
|
(-0.00035″)
|
(-0.00059″)
|
(-0.00086″)
|
(-0.00142″)
|
(-0.00228″)
|
(-0.00354″)
|
(-0.00591″)
|
|
|
> 10 - 18
|
-0.008
|
-0.011
|
-0.018
|
-0.027
|
-0.043
|
-0.07
|
-0.11
|
-0.18
|
|
(-0.00032″)
|
(-0.00043″)
|
(-0.00071″)
|
(-0.0010″)
|
(-0.00169″)
|
(-0.00275″)
|
(-0.00438″)
|
(-0.00709″)
|
|
|
> 18 - 30
|
-0.009
|
-0.013
|
-0.021
|
-0.033
|
-0.052
|
-0.084
|
-0.013
|
-0.210
|
|
(-0.00035″)
|
(-0.00051″)
|
(-0.00083″)
|
(-0.00129″)
|
(-0.00205″)
|
(-0.00331″)
|
(-0.00512″)
|
(-0.00827″)
|
|
|
> 30 - 50
|
-0.011
|
-0.016
|
-0.025
|
-0.039
|
-0.062
|
-0.1
|
-0.16
|
-0.250
|
|
(-0.00043″)
|
(-0.00063″)
|
(-0.00098″)
|
(-0.00153″)
|
(-0.00244″)
|
(-0.00393″)
|
(-0.00630″)
|
(-0.00984″)
|
|
|
> 50 - 80
|
-0.013
|
-0.019
|
-0.03
|
-0.046
|
-0.074
|
-0.12
|
-0.19
|
-0.300
|
|
(-0.00051″)
|
(-0.00075″)
|
(-0.00118″)
|
(-0.00181″)
|
(-0.00291″)
|
(-0.00472″)
|
(-0.00748″)
|
(-0.01181″)
|
|
|
> 80 - 120
|
-0.015
|
-0.022
|
-0.035
|
-0.054
|
-0.087
|
-0.14
|
-0.22
|
-0.350
|
|
(-0.00059″)
|
(-0.00087″)
|
(-0.00138″)
|
(-0.00213″)
|
(-0.00343″)
|
(-0.00551″)
|
(-0.00866″)
|
(-0.01378″)
|
|
|
> 120 - 180
|
-0.018
|
-0.025
|
-0.04
|
-0.063
|
-0.1
|
-0.16
|
-0.25
|
-0.400
|
|
(-0.00071″)
|
(-0.00098″)
|
(-0.00158″)
|
(-0.00248″)
|
(-0.00393″)
|
(-0.00629″)
|
(-0.00984″)
|
(-0.01575″)
|
|
|
> 180 - 250
|
-0.02
|
-0.029
|
-0.046
|
-0.072
|
-0.115
|
-0.185
|
-0.29
|
-0.460
|
|
(-0.00079″)
|
(-0.00114″)
|
(-0.00181″)
|
(-0.00283″)
|
(-0.00453″)
|
(-0.00723″)
|
(-0.01142″)
|
(-0.01811″)
|
