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You can send RFQs by filling out the RFQ form below. Or you can fax RFQs to 800-707-3439. We will get back to you ASAP.   About 4130 Alloy 4130 (AISI 4130) is a chromium molybdenum alloy steel. Alloy 4130 Steel is a low alloy steel which is excellent from the fusion weldability standpoint. Alloy Steel 4130 can be hardened by heat treatment. Applications: Typical applications for 4130 include structural use such as aircraft engine mounts and welded tubing applications.   4130 Steel Sheet, Plate: AMS 6345, AMS 6350, MIL-18729, ASTM-A-505, CR Sheet, Annealed Stock Size, Thickness: 0.020"~2.00", Width & Length: 18" x 72" or 36" x 72" 4130 HR & Annealed Alloy Plate Per AMS 6350, 4130 Normalized Alloy Plate Per AMS 6345   4130 Steel Tubing: AMS 6736, AMS 6731, MIL-T-6736, ASTM-A-519 Stock Size: OD 1/4"~2", Wall: 0.028"~0.25", Length: 20 FT R/L, Square and Rectangular Tubing also Available 4130 C.D. Per AMS-T-6736 Seamless Tube x 22 FT Random Length   4130 Steel Bar: AMS 6370, MIL-T-6758, ASTM-A331 Stock Size: 3/16" x 1" to 3" x 3" (Flat Bar), 1/4" Dia~6" Diameter (Round Bar). Cold Drawn & Normalized Round Bar   Other sizes are available on request.          Aircraft Alloys Bars 4130 HT, 4340 MOD 300M VM N&T, 52100 VM SPH ANN, 9310 VAC MELT N&T, NITRIDING VM N&T, 4130 NORM, 4340 N&T, 6150 VM ANN, D-6AC VAC MELT N&T, VACUUM HY-TUF N&SCA, 4140 ANN, 4340 VAC MELT N&T, 8740 ANN, H-11 VAC MELT ANN, 4140 NORM, 4620 AS ROLLED, 9-4-30 VAC MELT N&T, HY-TUFF N&T, 4330 MOD VM N&T, 4620 VM, 9310 N&T, NITRIDING HT 4130 Bar: AMS 2301, AMS-S-6758, ASTM-A-331, ASTM-A-322 MIL-S-6758, AMS 6346, AMS 6370, AMS 6348 4140 Bar: MIL-S- 5626, AMS 6382, AMS 2301 AMS 6349 4330 Mod, N &T Bar: MIL-S-8699, AMS 6427, AMS 2301, BMS-7-27 4330 Mod. Vac Melt Bar: AMS 6411, AMS 6427, MIL-S-8699, AMS 2300, BMS-7-27, BMS-7-122, EMS 96242, CE 0906, FMS 1012 4330 VAR: AMS 6411, AMS 6415, BAC5617, GRUMMAN, GM1010, CPS 4911, LOCKHEED, C-05-1190 4340 Vac. Melt Bar: MIL-S-5000, AMS 6415, AMS 2300, AMS 6414, MIL-S-8844 Class 1, EMS 641, BMS 7-28, DMS 1555, BPS 299-947-055, ASTM-A322 4340 Mod. Vac. Melt Bar N&T 300M: AMS 6419, AMS 2300, CE 0896, GM 1012, BMS 7-26 Class 1,DMS 1935, LC05 1190 4620 & 4620 Vac. Bar: MIL-S-7493, AMS 6294, AMS 2301, AMS 2300 6150 & 6150 Vac Melt Bar: MIL-S-8503, AMS 6448, AMS 2301, AMS 2300 8740 Bar: MIL-S-6049, AMS 6322, AMS 2301 9310 N&T, Vac. Melt Bar: MIL-S-7393C, AMS 6322, AMS 2301, AMS 6260, HT 5042, AMS 6265, BPS 299-947-032, EMS 56280, MIL-S-83030 Comp. 3 AMS 6267 52100 Annealed & Vac. Melt Bar: MIL-S-7420, AMS 6440, AMS 6444, AMS 2301, AMS 2300 9-4-30 Vac Melt Bar: AMS 6526, BMS-7-182B, STO-160-LB-00012, MMS-2102 Excludes Fracture Test D6AC Vac. Melt Bar: LCM-05-2190, MIL-S-8949, AMS 6431, General Dynamics FMS 1011C, STM-05-500, GM 1013 4130 Aircraft Alloy Sheet & Plate Specifications Normalized AMS 6345, MIL-S-18729 Condition A, Conditon N, Annealed AMS 6350, Commerical Quality ASTM A829 4130 Aircraft Alloy Sheet & Plate Sizes Available: Sheet Sizes: .025"~3/16" Thick X 18" or 36" Width X 72" Length Plate Sizes: 1/4" ~12" Thick X 18"~24" Width X 72" Length Aircraft Alloy Tubing 4130 Tubing, Condition: Annealed, Normalized, F4 Specifications: MIL-T-6736, AMS 6360 4140, 4140 Bar, 4140 Tubing Alloy 4140 is a workhorse grade with a variety of applications. 4140 Tubing, Condition: Annealed, Normalized, Tempered Specifications: UNS G41400, AMS 6381 4330, 4330 Mod Bar, 4330 Vac Bar, 4330 Var Alloy 4330 is a high performance grade material that sees a wide variety of applications. Specifications: UNS K23080 4340, 4340 Mod Bar, 4340 Vac Bar Alloy 4340 is another alloy known for superior mechanical properties. It is used in many industries including oil and gas exploration, gear manufacturing, etc. 4340 Tubing, Condition: Annealed, Normalized, Tempered Specifications: UNS G43400, AMS 6415 3310 3310 :AMS 6250  3135 3135 :AMS 6330  4037 4037 :AMS 6300  4130 4130 :AMS 6348, 6350, 6351, 6370, 6528, 6371, 6360, 6373  4132 4132 :AMS 6356  4135 4135 :AMS 6352, 6372, 6365  4140 4140 :AMS 6349, 6379, 6382, 6395, 6452, 6381  4142 4142 H MOD :AMS 6378  4320 4320 :AMS 6299  4330 MOD 4330 MOD :AMS 6411, 6427, BMS7-122  4335 4335 MOD :AMS 6426, 6428, 6429, 6430, 6433, 6434, 6435   4337 4335 MOD :AMS 6433, 6434, 6435, 6428  4337 4337 :AMS 6412, 6413  4340 AMS 6359, 6409, 6414, 6415, 6454, MIL-S-5000, BMS7-28  4615 4615 :AMS 6290  4617 4617 :AMS 6292  4620 4620 :AMS 6294  4640 4640 :AMS 6312, 6317  6150 6150 :AMS 6448, 6450, 6455 8615 8615 :AMS 6270  8620 8620 :AMS 6274, 6276, 6277  8630 8630 :AMS 6280, 6281, 6530, 6550  8735 8735 :AMS 6320, 6282, 6535 , 6357 8740 8740 :AMS 6322, 6324, 6325, 6327, 6358 8750 8750 :AMS 6328H  9310 9310 :AMS 6265, 6260, 6267  9315 9315 :AMS 6263  9317 9317 :AMS 6264  9840 9840 :AMS 6342  135 MOD 135 MOD :AMS 6470H, 6471, 6472  17-22 17-22 :AMS 6302, 6303, 6304, 6305  17-22A 17-22A :AMS 6385, 6436  300M 300M :AMS 6417, 6419, 6257, BMS7-26, MIL-S-8844 43BV12 43BV12 :AMS 6266  52CB 52CB :AMS 6426  50100 50100 :AMS 6442  51100 51100 :AMS 6443, 6445, 6446, 6449  52100 52100 :AMS 6440, 6444, 6447  81B40 81B40 :AMS 6321  94B17 94B17 :AMS 6275  AERMET 100 AERMET 100 :AMS 6532, AMS6532, AMS-6532  CBS600 CBS600 :AMS 6255  CBS1000M CBS1000M :AMS 6256  D6AC D6AC :AMS 6438, 6439 , AMS 6431  H-11 H-11 :AMS 6437, 6485, 6487, 6488  HP 9-4-20 HP 9-4-20 :AMS 6523, 6524, 6525, 6526, 6527  HP 9-4-25 HP 9-4-25 :AMS 6546 HS-220 HS-220 :AMS 6407  HY-TUF HY-TUF :AMS 6418  M50 M50 :AMS 6490, 6491  MARAGING 250 MARAGING 250 :AMS 6512  MARAGING 300 MARAGING 300 :AMS 6414  MOD 98B37 MOD 98B37 :AMS 6421  MOD 98B V40 MOD 98B V40 :AMS 6422, 6423  X200 X200 :AMS 6406  Please call 800-707-6061 or fax to 800-707-3439. 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