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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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