SAE AMS2251H
Superseded
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
View Superseded by
Tolerances Low-Alloy Steel Bars
Available format(s)
Hardcopy , PDF
Superseded date
08-11-2018
Superseded by
Language(s)
English
Published date
27-11-2013
Publisher
Important note : Users cannot be edited or removed once added to your Multi user PDF.
1. SCOPE
2. DIAMETER OR THICKNESS
3. WIDTH
4. LENGTH
5. STRAIGHTNESS
6. FLATNESS
7. SPECIAL TOLERANCES
8. NOTES
Specifies established inch/pound manufacturing tolerances applicable to low-alloy steel bars ordered to inch/pound dimensions.
| DevelopmentNote |
Supersedes SAE MAM 2251. (07/2007)
|
| DocumentType |
Standard
|
| Pages |
7
|
| PublisherName |
SAE International
|
| Status |
Superseded
|
| SupersededBy | |
| Supersedes |
This specification covers established inch/pound manufacturing tolerances applicable to low-alloy steel bars ordered to inch/pound dimensions. These tolerances apply to all conditions, unless otherwise noted. The term “exclusive” is used to apply only to the higher figure of the specified range.
| SAE AMS6280M | Steel Bars, Forgings, and Rings 0.50Cr - 0.55Ni - 0.20Mo (0.28 – 0.33C) (SAE 8630) |
| SAE AMS6304M | Low-Alloy Steel, Heat-Resistant, Bars, Forgings, and Tubing 0.95Cr - 0.55Mo - 0.30V (0.40 - 0.50C) |
| MIL-S-6758 Revision B:1993 | STEEL, CHROME-MOLYBDENUM (4130) BARS AND REFORGING STOCK (AIRCRAFT QUALITY) |
| SAE AMS6260S | Steel, Bars, Forgings, and Tubing 1.2Cr - 3.2Ni - 0.12Mo (0.07 - 0.13C) (9310) |
| SAE AMS6548 | Steel Bars, Forgings, and Tubing 1.0Cr – 3.2Ni – 0.2Mo (0.12 – 0.17C) Premium Aircraft-Quality Electroslag Remelted or Consumable Electrode Vacuum Remelted |
| SAE AMS6342K | Steel Bars, Forgings, and Tubing 0.80Cr - 1.0Ni - 0.25Mo (0.38 - 0.43C) (SAE 9840) |
| SAE AMS6330J | Steel Bars, Forgings, and Tubing 0.65Cr - 1.25Ni (0.33 – 0.38C) |
| SAE AMS6527F | Steel, Bars and Forgings 2.0Cr - 10Ni - 14Co - 1.0Mo (0.15 - 0.19C) Vacuum Melted, Normalized and Overaged |
| SAE AMS6328N | Steel, Bars, Forgings, and Tubing 0.50Cr - 0.55Ni - 0.25Mo (0.48 to 0.53C) (8750) |
| SAE AMS6496A | Steel Bars, Forgings, and Tubing, Nitriding 1.4Cr - 1.2Mo - 0.3V (0.29 - 0.36C) Aircraft-Quality for Bearing Applications |
| SAE AMS6274R | Steel, Bars, Forgings, and Tubing 0.50Cr - 0.55Ni - 0.20Mo (0.18 - 0.23C) (SAE 8620) |
| SAE AMS6257F | Steel Bars, Forgings, and Tubing 1.6Si - 0.82Cr - 1.8Ni - 0.40Mo - 0.08V (0.40 - 0.44C) Consumable Electrode Vacuum Remelted Normalized and Tempered |
| SAE AMS6539 | Steel Bars, Forgings, and Tubing 1.7Cr – 3.8Ni – 0.3Mo (0.32 – 0.38 C) Aircraft-Quality |
| SAE AMS6516B | Steel, Bars and Forgings 1Cr – 10Ni – 7Co – 2Mo – 1.3W – 0.1V – (0.28 – 0.32C) Vacuum Induction Melted, Vacuum Arc Remelted, Normalized and Annealed Precipitation Hardenable |
| SAE AMS6528D | Steel, Bars 0.95Cr - 0.20Mo (0.28 - 0.33C) (SAE 4130) Special Aircraft Quality Cleanliness Normalized |
| SAE AMS6471H | Steel, Nitriding, Bars, Forgings, and Tubing 1.6Cr - 0.35Mo - 1.13Al (0.38 - 0.43C) (135 Mod) Consumable Electrode Vacuum Melted |
| SAE AMS6472F | Steel, Bars and Forgings, Nitriding 1.6Cr - 0.35Mo - 1.1Al (0.38 - 0.43C) (135 Mod) Hardened and Tempered, 112 ksi (772 MPa) Tensile Strength |
| SAE AMS6443G | Steel Bars, Forgings, and Tubing, 1.0Cr (0.98 - 1.10C) (SAE 51100), Consumable Electrode Vacuum Melted |
| SAE AMS6340B | Steel Bars, Forgings, and Tubing 0.88Cr - 1.8Ni - 0.42Mo - 0.08V (0.28 – 0.33C) (4330 Mod) Consumable Electrode Vacuum Remelted |
| SAE AS1182C | Standard Stock Removal Allowance Aircraft-Quality and Premium Aircraft-Quality Steel Bars and Mechanical Tubing |
| SAE AMSS6098A | Steel, Chrome-Nickel-Molybdenum (8735) Bars and Reforging Stock (Aircraft Quality) |
| SAE AMS6512H | Steel, Maraging, Bars, Forgings, Tubing, and Rings 18Ni - 7.8Co - 4.9Mo - 0.40Ti - 0.10Al Consumable Electrode Vacuum Melted, Annealed |
| SAE AMS6514J | Steel, Maraging, Bars, Forgings, Tubing, and Rings 18.5Ni - 9.0Co - 4.9Mo - 0.65Ti - 0.10Al Consumable Electrode Vacuum Melted, Annealed |
| SAE AMS6378G | Steel Bars 1.0Cr - 0.20Mo - 0.45Se (0.39 - 0.48C) (4142H Modified) Die-Drawn, 130 ksi (896 MPa) Yield Strength Free Machining |
| SAE AMS6499A | Steel, Bars, Forgings, and Tubing 2.7Si - 0.85Cr - 1.8Ni - 0.4Mo - 0.2V - (0.37 - 0.44C) Double Vacuum Melted |
| SAE AMS6263M | Steel Bars, Forgings, and Tubing 1.2Cr - 3.2Ni - 0.12Mo (0.11 - 0.17C) (9315) |
| MIL-S-83030 Revision A:1968 | STEEL ALLOY, CARBURIZING, BARS AND BILLETS, STEEL NICKEL-CHROMIUM (3310, 3316, AND 9310), PREMIUM QUALITY |
| SAE AMS6370P | Steel, Bars, Forgings, and Rings 0.95Cr - 0.20Mo (0.28 - 0.33C) (SAE 4130) |
| SAE AMS6272M | Steel Bars, Forgings, and Tubing 0.50Cr - 0.55Ni - 0.20Mo (0.15 - 0.20C) (SAE 8617) |
| SAE AMS6551 | Steel Bars, Forgings and Tubing 1.75 Cr – 4.0 Ni – 0.5 Mo – (0.35–0.40 C) Premium Aircraft Quality Consumable Electrode Vacuum Remelted |
| SAE AMS6423H | Steel Bars, Forgings, and Tubing 0.92Cr – 0.75Ni – 0.52Mo – 0.003B – 0.04V (Modified 98BV40) |
| SAE AMS6427M | Steel Bars, Forgings, and Tubing 0.88Cr - 1.8Ni - 0.42Mo - 0.08V (0.28 - 0.33C) (4330 Mod) |
| SAE AMS6547 | Steel Bars, Forgings, and Tubing 1.0Cr - 3.2Ni - 0.2Mo (0.12 – 0.17C) Aircraft-Quality |
| SAE AMS6407K | Steel, Bars, Forgings, and Tubing 1.2Cr - 2.0Ni - 0.45Mo (0.27 – 0.33C) |
| SAE AMS6300G | Steel Bars and Forgings 0.25Mo (0.35 - 0.40C) (SAE 4037) |
| SAE AMS6447H | Steel, Bars, Forgings, and Tubing 1.4Cr (0.93-1.05C) (SAE 52100) Electroslag Remelted |
| SAE AMS6431P | Steel, Bars, Forgings, and Tubing 1.05Cr - 0.55Ni - 1.0Mo - 0.11V (0.45 - 0.50C) (D6AC) Vacuum Consumable Electrode Remelted |
| SAE AMS6432C | Steel Bars, Forgings, and Tubing, 1.05Cr - 0.55Ni - 1.0Mo - 0.12V (0.43 - 0.49C) |
| SAE AMS6511A | Steel, Maraging, Bars, Forgings, Tubing, and Rings 18Ni - 8.5Co - 3.2Mo - 0.20Ti - 0.10Al Double Vacuum Melted, Annealed |
| SAE AMS6532F | Steel, Bars and Forgings 3.1Cr - 11.5Ni - 13.5Co - 1.2Mo (0.21 - 0.25C) Vacuum Melted, Normalized and Overaged Precipitaiton Hardenable |
| SAE AMS6494B | Steel Bars, Forgings, and Tubing 1.0Cr – 2.50Ni – 2.0Mo – 1.10Si (0.10 – 0.20C) Aircraft-Quality |
| SAE AMS6478B | Steel, Bars and Forgings, 3.1Cr - 11.5Ni - 13.5Co - 1.2Mo (0.21 - 0.25C), Vacuum Melted, Annealed, Heat Treatable to 290 ksi (1999 MPa) Tensile Strength |
| SAE AMS6264L | Steel, Carburizing Grade, Bars, Forgings, and Tubing 1.2Cr - 3.2Ni - 0.12Mo (0.14 - 0.20C) (9317) |
| SAE AMS6348D | Steel, Bars 0.95Cr - 0.20Mo (0.28 to 0.33C) (SAE 4130) Normalized |
| SAE AMS7713C | Iron, Electrical, Bar and Strip Cold Finished, Annealed |
| SAE AMSS6758B | Steel, Chrome-Molybdenum (4130) Bars and Reforging Stock (Aircraft Quality) |
| SAE AMS6278E | Steel, Bars, Forgings, and Tubing 4.1Cr - 3.4Ni - 4.2Mo - 1.2V (0.11 - 0.15C) Premium Aircraft-Quality for Bearing Applications Double Vacuum Melted |
| SAE AMS6327L | Steel Bars and Forgings 0.50Cr - 0.55Ni - 0.25Mo (0.38 - 0.43C) (SAE 8740) Heat Treated, 125 ksi (862 MPa) Tensile Strength |
| SAE AMS6549 | Steel Bars, Forgings, and Tubing 1.0Cr – 3.2Ni - 0.2Mo (0.12 – 0.17C) Premium Aircraft-Quality Double Vacuum Melted |
| SAE AMS6320P | Steel Bars, Forgings, and Rings 0.50Cr - 0.55Ni - 0.25Mo (0.33 – 0.38C) (8735) |
| MIL-S-81054 Revision A:1976 | STEEL, BARS AND FORGINGS, CHROMIUM NICKEL MOLYBDENUM VANADIUM (FOR TORPEDO MK 46 MOD O) |
| SAE AMS6477C | Steel, Bars, Forgings, and Tubing 0.80Cr (0.90 – 1.03C) For Bearing Applications |
| SAE AMS6519D | Steel, Maraging, Bars, Forgings, Tubing, and Rings 19Ni - 3.0Mo - 1.4Ti - 0.10Al Premium Aircraft Quality Double Vacuum Melted, Annealed |
| SAE AMS6509A | Steel Bars and Forgings 3.5Cr – 7.5Ni – 16.3Co – 1.75Mo – 0.2W – (0.09 - 0.13C) Double Vacuum Melted, Normalized, Annealed |
| SAE AMS6302K | Low-Alloy Steel, Heat-Resistant, Bars, Forgings, and Tubing 0.65Si - 1.25Cr - 0.50Mo - 0.25V (0.28 - 0.33C) |
| SAE AMS6292J | Steel Bars and Forgings, Carburizing 1.8Ni - 0.25Mo (0.15 - 0.20C) (SAE 4617) |
| SAE AMS6442G | Steel Bars and Forgings 0.50cr (0.98-1.10c) (SAE 50100) for Bearing Applications |
| SAE AMS6324J | Steel Bars, Forgings, and Tubing 0.65Cr - 0.70Ni - 0.25Mo (0.38 – 0.43C) (8740 Modified) |
| SAE AMS6415U | Steel, Bars, Forgings, and Tubing 0.80Cr - 1.8Ni - 0.25Mo (0.38 - 0.43C) (SAE 4340) |
| SAE AMS6414M | Steel, Bars, Forgings, and Tubing 0.80Cr - 1.8Ni - 0.25Mo (0.38 - 0.43C) (SAE 4340) Vacuum Consumable Electrode Remelted |
| SAE AMS6490H | Steel Bars, Forgings, and Tubing 4.0Cr - 4.2Mo - 1.0V (0.77 - 0.85C) (M-50) Premium Aircraft-Quality for Bearing Applications Consumable Electrode Vacuum Melted |
| SAE AMS6529D | Steel, Bars 0.95Cr - 0.20Mo (0.38 - 0.43C) (SAE 4140) Special Aircraft-Quality Cleanliness Normalized |
| SAE AMS6346B | Steel Bars 0.95Cr - 0.20Mo (0.28 to 0.33C) (SAE 4130) Hardened and Tempered, 125 Ksi (862 MPa) Tensile Strength |
| SAE AMS6270Q | Steel, Bars, Forgings, and Tubing 0.50Cr - 0.55Ni - 0.20Mo (0.13 - 0.18C) (SAE 8615) |
| SAE AMS6303J | Steel Bars and Forgings, Low Alloy, Heat-Resistant 0.65Si - 1.25Cr - 0.50Mo - 0.85V (0.25 - 0.30C) |
| SAE AMS6277H | Steel, Bars, Forgings, and Tubing 0.50Cr - 0.55Ni - 0.20Mo (0.18 - 0.23C) (SAE 8620) Vacuum Arc or Electroslag Remelted |
| SAE AMS6479D | Steel, Bars, Forgings, and Tubing 1.45Cr (0.93-1.05C) (SAE 52100) Special Aircraft-Quality Cleanliness |
| SAE AMS6417H | Steel, Bars, Forgings, and Tubing 1.6Si - 0.82Cr - 1.8Ni - 0.40Mo - 0.08V (0.38 - 0.43C) Consumable Electrode Vacuum Remelted |
| SAE AMS6255F | Steel Bars, Forgings, and Tubing 1.1Si - 1.45Cr - 1.0Mo - 0.08Al (0.16 - 0.22C) Double Vacuum Melted |
| SAE AMS6276L | Steel, Bars, Forgings, and Tubing 0.50Cr - 0.55Ni - 0.20Mo (0.18 - 0.23C) (SAE 8620) Consumable Electrode Vacuum Remelted |
| SAE AMS6429H | Steel Bars, Forgings, Tubing, and Rings 0.78Cr - 1.8Ni - 0.35Mo - 0.20V (0.33 - 0.38C) (4335 Mod) Consumable Electrode Vacuum Melted |
| SAE AMS6412N | Steel, Bars and Forgings 0.80Cr - 1.8Ni - 0.25Mo (0.35 - 0.40C) (4337) |
| SAE AMS6294J | Steel Bars and Forgings, Carburizing 1.8Ni - 0.25Mo (0.17 - 0.22C) (SAE 4620) |
| SAE AMS6482A | Steel Bars, Forgings, and Tubing 1.5Si - 1.25Cr - 3.8Ni - 0.50Mo - 0.30V (0.40C) Vacuum Remelted Annealed |
| SAE AMS6493A | Steel Bars, Forgings, and Tubing 1.0Cr - 3.25Ni - 0.40Mo (0.17 - 0.22C) Electroslag Remelted or Consumable Electrode Vacuum Remelted Premium Aircraft-Quality |
| SAE AMS6308E | Steel, Bars and Forgings 0.90Si - 1.0Cr - 2.0Ni - 3.2Mo - 2.0Cu - 0.10V (0.07 - 0.13C) Vacuum Arc or Electroslag Remelted |
| SAE AMS6421G | Steel, Bars, Forgings, and Tubing 0.80Cr - 0.85Ni - 0.20Mo - 0.003B (0.35 - 0.40C) (Modified 98B37) |
| SAE AMS6515A | Steel, Maraging, Bars, Forgings, Tubing, and Rings 18.5Ni - 12.0Co - 4.9Mo - 1.40Ti - 0.10Al Double Vacuum Melted, Annealed |
| SAE AMS6382P | Steel, Bars, Forgings, and Rings 0.95Cr - 0.20Mo (0.38 - 0.43C) (SAE 4140) Annealed |
| SAE AMS6409E | Steel, Bars, Forgings, and Tubing 0.80Cr - 1.8Ni - 0.25Mo (0.38 - 0.43C) (SAE 4340) Special Aircraft Quality Cleanliness Normalized and Tempered |
| SAE AMS6492A | Steel Bars, Forgings, and Tubing 1.0Cr - 3.25Ni - 0.40Mo (0.17 - 0.22C) Aircraft Quality |
| SAE AMS6317K | Steel Bars and Forgings 1.8Ni - 0.25Mo (0.38 – 0.43C) (4640) Heat Treated, 125 ksi (862 MPa) Tensile Strength |
| SAE AMS6312J | Steel Bars, Forgings, and Tubing 1.8Ni - 0.25Mo (0.38 - 0.43C) (4640) |
| SAE AMS6517A | Steel, Bars, and Forgings 3.5Cr - 9.5Ni - 18Co - 1.1Mo (0.13 – 0.17C) Double Vacuum Melted, Normalized, Annealed |
| SAE AMSS6050B | Steel, Chrome-Nickel-Molybdenum (8630) Bars and Reforging Stock (Aircraft Quality) |
| SAE AMS6325K | Steel, Bars, and Forgings 0.50Cr - 0.55Ni - 0.25Mo (0.38 - 0.43C) (SAE 8740) Heat Treated, 105 ksi (724 MPa) Tensile Strength |
| SAE AMS6426F | Steel Bars, Forgings, and Tubing 0.75Si - 1.0Cr - 0.58Mo (0.80 - 0.90C) Consumable Electrode Vacuum Melted |
| SAE AMS6419H | Steel, Bars, Forgings, and Tubing 1.6Si - 0.82Cr - 1.8Ni - 0.40Mo - 0.08V (0.40 - 0.45C) Consumable Electrode Vacuum Remelted |
| SAE AMS6470N | Steel, Nitriding, Bars, Forgings, and Tubing 1.6Cr - 0.35Mo - 1.13Al (0.38 - 0.43C) (135 Mod) |
| SAE AMS6250M | Steel Bars, Forgings, and Tubing 1.5Cr - 3.5Ni (0.07 - 0.13 C) (3310) |
| SAE AMS6543F | Steel, Bars and Forgings 2.0Cr - 10Ni - 8.0Co - 1.0Mo (0.10 - 0.14C) (HY-180) Double Vacuum Melted Solution Heat Treated, Marage Hardenable |
| SAE AMS6305G | Steel, Heat-Resistant, Bars, Forgings, and Tubing 0.95Cr - 0.55Mo - 0.30V (0.40 - 0.50C) Vacuum Arc Remelted |
| SAE AMS6424G | Steel Bars, Forgings, and Tubing 0.80Cr - 1.8Ni - 0.25Mo (0.49 – 0.55C) |
| SAE AMS6290J | Steel, Bars and Forgings, Carburizing 1.8Ni - 0.25Mo (0.11 - 0.17C) (SAE 4615) |
| SAE AMS6481D | Steel Bars, Forgings, and Tubing, Nitriding 3Cr - 1Mo - 0.2V - (0.29 - 0.36C) Premium Aircraft-Quality for Bearing Applications Double Vacuum Melted |
| SAE AMS6448L | Steel, Bars, Forgings, and Tubing 0.95Cr - 0.22V (0.48 – 0.53C) (SAE 6150) |
| SAE AMS6299F | Steel Bars, Forgings, and Tubing, Carburizing 0.50Cr - 1.8Ni - 0.25Mo (0.17 - 0.23C) (SAE 4320H) |
| SAE AMS6430J | Steel, Bars, Forgings, Tubing, and Rings 0.75Mn - 0.78Cr - 1.8Ni - 0.35Mo - 0.20V (0.32 – 0.38C) (4335 Modified) |
| SAE AMS6484E | Steel, Bars, Forgings, and Tubing 0.80Cr - 1.8Ni - 0.25Mo (0.38 - 0.43C) (SAE 4340) Normalized and Tempered |
| SAE AMS6475K | Steel, Nitriding, Bars, Forgings, and Tubing 1.1Cr – 3.5Ni – 0.25Mo – 1.2Al (0.21 – 0.26C) |
| SAE AMS6526H | Steel, Bars, Forgings, Tubing, and Rings 1.0Cr - 7.5Ni - 4.5Co - 1.0Mo - 0.09V (0.29 - 0.34C) Consumable Electrode Vacuum Remelted, Annealed |
| SAE AMS6498A | Steel Bars, Forgings, and Tubing, Nitriding 1.4Cr - 1.2Mo - 0.3V (0.29 - 0.36C) Double Vacuum Melted Premium Aircraft-Quality for Bearing Applications |
| SAE AMS6497A | Steel Bars, Forgings, and Tubing, Nitriding 1.4Cr - 1.2Mo - 0.3V (0.29 - 0.36C) Electroslag Remelted or Consumable Electrode Vacuum Remelted Premium Aircraft-Quality for Bearing Applications |
| SAE AMS6408E | Steel, Hotwork Tool, Bars and Forgings 5.25Cr - 1.5Mo - 1.0V (0.35-0.45C) (H-13) Electroslag Remelted (ESR) or Consumable Electrode Vacuum Arc Remelted (VAR) Annealed |
| SAE AMS6425D | Steel, Bars, Forgings, and Tubing 1.4Mn - 1.5Si - 0.30Cr - 1.8Ni - 0.40Mo (0.23 - 0.28C) Consumable Electrode Vacuum Melted |
| SAE AMS6422K | Steel, Bars, Forgings, and Tubing 0.80Cr - 0.85Ni - 0.20Mo - 0.003B - 0.04V (0.38 - 0.43C) (Modified 98BV40) |
| SAE AMS6491E | Steel Bars, Forgings, and Tubing 4.1Cr - 4.2Mo - 1.0V (0.80 - 0.85C) (M-50) Premium Aircraft-Quality for Bearing Applications, Double Vacuum Melted |
| SAE AMS6411J | Steel Bars, Forgings, and Tubing 0.88Cr - 1.8Ni - 0.42Mo - 0.08V (0.28 - 0.33C) (4330 Mod) Consumable Electrode Remelted |
| SAE AMS6265P | Steel, Bars, Forgings, and Tubing 1.2Cr - 3.25Ni - 0.12Mo (0.07 - 0.13C) (9310) Vacuum Consumable Electrode Remelted |
| SAE AMS6495B | Steel Bars, Forgings, and Tubing 1.0Cr – 2.50Ni – 2.0Mo – 1.10Si (0.10 – 0.20C) Premium Aircraft-Quality Electroslag Remelted or Consumable Electrode Vacuum Remelted |
| SAE AMS6322P | Steel Bars, Forgings, and Rings 0.50Cr - 0.55Ni - 0.25Mo (0.38 - 0.43C) (SAE 8740) |
| SAE AMS6349E | Steel Bars 0.95Cr - 0.20Mo (0.38 to 0.43C) (SAE 4140) Normalized |
| SAE AMS6487L | Steel, Bars, and Forgings 5.0Cr - 1.3Mo - 0.50V (0.38 - 0.43C) (H-11) Consumable Electrode Vacuum Melted |
| SAE AMS6428K | Steel, Bars, Forgings, and Tubing 0.78Cr - 1.8Ni - 0.35Mo - 0.20V (0.32 - 0.38C) (4335 Mod) |
| SAE AMS6440S | Steel, Bars, Forgings, and Tubing 1.45Cr (0.93 - 1.05C) (SAE 52100) For Bearing Applications |
| SAE AMS6525E | Steel, Bars, Forgings, Tubing, and Rings 0.75Cr - 9.0Ni - 4.5Co - 1.0Mo - 0.09V (0.17 - 0.23C) Consumable Electrode Vacuum Melted |
| SAE AMS6267J | Steel Bars, Forgings, and Tubing 1.2Cr - 3.25Ni - 0.12Mo (0.07 - 0.13C) (9310) Electroslag Remelted or Consumable Electrode Vacuum Remelted |
| SAE AMS6444M | Steel, Bars, Forgings, and Tubing 1.45Cr (0.93 – 1.05C) (SAE 52100) Premium Aircraft-Quality, Consumable Electrode Vacuum Remelted |
| SAE AMS6475L | Steel, Nitriding, Bars, Forgings, and Tubing 1.1Cr - 3.5Ni - 0.25Mo - 1.2Al (0.21 - 0.26C) |
| SAE AMS6491F | Steel Bars, Forgings, and Tubing 4.1Cr - 4.2Mo - 1.0V (0.80 - 0.85C) (M-50) Premium Aircraft-Quality for Bearing Applications, Double Vacuum Melted |
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