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Carburizing Seamless Type Automotive Steel Tubes ASTM A534 Grade B20 B21

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Carburizing Seamless Type Automotive Steel Tubes ASTM A534 Grade B20 B21

Brand Name : Torich

Place of Origin : China

Payment Terms : L/C, T/T

Model Number : ASTM A534

Certification : ISO 9001 ISO14001

MOQ : 1 ton

Delivery Time : 60-90days

Packaging Details : In export packaging

Price : negotiable

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Carburizing Seamless Type Automotive Steel Tubes ASTM A534 Grade B20 B21

 

Carburizing Steels for Anti-Friction Bearings

 

Size:OD 4-520mm WT 0.5-50mm L:3-6m

Application:Bear

 

Chemical Composition
 Number C Name C  Mn  P (max)  S (max)  Si  Cr  Ni  Mo  Cu (max)  O (max)D Al (max) 
. . .  4118H  0.17 -0.23  0.60 -1.00  0.025 0.015 0.15 -0.35  0.30 -0.70  . . .  0.08 -0.15  0.3 0.002 0.05
. . .  4320H  0.17 -0.23  0.40 -0.70  0.025 0.015 0.15 -0.35  0.35 -0.65  1.55 -2.00  0.20 -0.30  0.3 0.002 0.05
. . .  4620H  0.17 -0.23  0.35 -0.75  0.025 0.015 0.15 -0.35  . . .  1.55 -2.00  0.20 -0.30  0.3 0.002 0.05
. . .  4720H  0.17 -0.23  0.45 -0.75  0.025 0.015 0.15 -0.35  0.30 -0.60  0.85 -1.25  0.15 -0.25  0.3 0.002 0.05
. . .  4817H  0.14 -0.20  0.30 -0.70  0.025 0.015 0.15 -0.35  . . .  3.20 -3.80  0.20 -0.30  0.3 0.002 0.05
. . .  4820H  0.17 -0.23  0.40 -0.80  0.025 0.015 0.15 -0.35  . . .  3.20 -3.80  0.20 -0.30  0.3 0.002 0.05
. . .  5120H  0.17 -0.23  0.60 -1.00  0.025 0.015 0.15 -0.35  0.60 -1.00  . . .  . . .  0.3 0.002 0.05
. . .  8617H  0.14 -0.20  0.60 -0.95  0.025 0.015 0.15 -0.35  0.35 -0.65  0.35 -0.75  0.15 -0.25  0.3 0.002 0.05
. . .  8620H  0.17 -0.23  0.60 -0.95  0.025 0.015 0.15 -0.35  0.35 -0.65  0.35 -0.75  0.15 -0.25  0.3 0.002 0.05
. . .  9310H  0.07 -0.13  0.40 -0.70  0.025 0.015 0.15 -0.35  1.00 -1.45  2.95 -3.55  0.08 -0.15  0.3 0.002 0.05
B20  20Cr3  0.17 -0.23  0.60 -1.00  0.025 0.015 0.40 max  0.60 -1.00  . . .  . . .  0.3 0.002 0.05
B21  20Cr4  0.17 -0.23  0.60 -0.90  0.025 0.015 0.40 max  0.90 -1.20  . . .  . . .  0.3 0.002 0.05
B22  20MnCr4-2  0.17 -0.23  0.65 -1.10  0.025 0.015 0.40 max  0.40 -0.75  . . .  . . .  0.3 0.002 0.05
B23  17MnCr5  0.14 -0.19  1.00 -1.30  0.025 0.015 0.40 max  0.80 -1.10  . . .  . . .  0.3 0.002 0.05
B24  19MnCr5  0.17 -0.22  1.10 -1.40  0.025 0.015 0.40 max  1.00 -1.30  . . .  . . .  0.3 0.002 0.05
B25  15CrMo4  0.12 -0.18  0.60 -0.90  0.025 0.015 0.40 max  0.90 -1.20  . . .  0.15 -0.25  0.3 0.002 0.05
B26  20CrMo4  0.17 -0.23  0.60 -0.90  0.025 0.015 0.40 max  0.90 -1.20  . . .  0.15 -0.25  0.3 0.002 0.05
B27  20MnCrMo4-2  0.17 -0.23  0.65 -1.10  0.025 0.015 0.40 max  0.40 -0.75  . . .  0.10 -0.20  0.3 0.002 0.05
B28  20NiCrMo2  0.17 -0.23  0.60 -0.95  0.025 0.015 0.40 max  0.35 -0.65  0.40 -0.70  0.15 -0.25  0.3 0.002 0.05
B29  20NiCrMo7  0.17 -0.23  0.40 -0.70  0.025 0.015 0.40 max  0.35 -0.65  1.60 -2.00  0.20 -0.30  0.3 0.002 0.05
B30  18CrNiMo7-6  0.15 -0.21  0.50 -0.90  0.025 0.015 0.40 max  1.50 -1.80  1.40 -1.70  0.25 -0.35  0.3 0.002 0.05
B31  18NiCrMo14-6  0.15 -0.20  0.40 -0.70  0.025 0.015 0.40 max  1.30 -1.60  3.25 -3.75  0.15 -0.25  0.3 0.002 0.05
B32  16NiCrMo16-5  0.14 -0.18  0.25 -0.55  0.025 0.015 0.40 max  1.00 -1.40  3.80 -4.30  0.20 -0.30  0.3 0.002 0.05

 

 

Inclusion Rating
Rating Units
Thin Series Heavy Series
A-2 1/2 A-1 1/2
B-2 B-1
C-1/2 C-1/2
D-1 D-1

 

 

Decarburrization and surface imperfections for coils anf bars for balls and rollers
size,in.(mm) Decarburization or Surface Imperfections per Side,max,in.(mm)
Hot-Rolled or Hot Rolled Annealed  Cold-Finished 
Through 0.250(6.35) 0.005(0.13) 0.003(0.08)
Over 0.250(6.35)-0.500(12.7),Incl 0.006(0.15) 0.004(0.10)
Over 0.500(12.7)-0.750(19.1),Incl 0.008(0.20) 0.006(0.15)
Over 0.750(19.1)-1.000(25.4),Incl 0.010(0.25) 0.008(0.20)

 

 

Decarburization and Surface Imperfections for Bars and Tubes
size,In.(mm) Decarburization or Surface Imperfections per Side,Max,in.(mm)
Hot-Rolled bars  Annealed  Cold-Finished 
Bars Tubes Bars Tubes
Through 1.000(25.4) 0.012(0.31) 0.015(0.38) 0.012(0.31) 0.012(0.31) 0.010(0.21)
Over 1.000(25.4)-2.000(50.8),Incl 0.017(0.43) 0.022(0.56) 0.020(0.51) 0.015(0.38) 0.014(0.36)
Over 2.000(50.8)-3.000(76.2),Incl 0.025(0.64) 0.030(0.76) 0.030(0.76) 0.025(0.64) 0.019(0.48)
Over 3.000(76.2)-4.000(101.6),Incl 0.035(0.89) 0.045(1.14) 0.035(0.89) 0.024(0.61)
Over 4.000(101.6)-5.000(127.0),Incl 0.055(1.40) 0.065(1.65) 0.040(1.02) 0.028(0.71)

Product Tags:

low carbon steel tube

      

low carbon steel pipe

      
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