9310, 14NiCrMo13-4, 1.6657, UNS G93100 Low Alloy Steel


9310, 14NiCrMo13-4, 1.6657, UNS G93100 Low Alloy Steel acc. to AMS 6265 VAR (CEVM), AMS 6267 Type 2, AMS 2300 Cleanliness, AMS 6260 Air Melt Aircraft Quality (except VAR), BPS 299-947-032, MIL-S-7393 Comp 3 (except VAR), MIL-S-83030, EMS 56729, EMS 56280, GE S-400 S-1000

9310, 14NiCrMo13-4, 1.6657, UNS G93100 Low Alloy Steel - Introduction and Application

9310, 14NiCrMo13-4, 1.6657, UNS G93100 is a alloy steel in Low Alloy Steelcontaining molybdenum, nickel and chromium, for heat-chemical treatment - carburization is characterized by low hardness, high durability and malleability. The chemical composition contains increased content of nickel and chromium in relation to 15NiCr13 grade. Designed for sections with intermediate dimensions, exposed to large and variable loads and associated work stresses, service Steel Aerospace stocks Premium Aircraft Quality produced double melted in an Electric Furnace, followed by a VAR, or Vacuum Arc Remelt (also known as CEVM). Standard air-melted Aircraft Quality AMS 6260 Air Melt material is available on request. 9310 VIM-VAR material is also available on request. main used, among others, in aviation, in parts and components of internal combustion engines and aviation equipment. Thanks to its properties, it is also used for very important components of machines or vehicles - as steering shafts, adjusting screws, gears, rollers or axles.14NiCrMo13-4 steel is its equivalent. It has similar values and chemical composition of 15NiCr13 steel, but it has a much greater range of Nickel in the chemical composition.

14NiCrMo13-4 steel should be welded before carburizing, and the product does not require pre-heating prior to the treatment.


Melted process

  • AOD+VAR
  • VIM+VAR

9310, 14NiCrMo13-4, 1.6657, UNS G93100 Low Alloy Steel - Chemical composition WT %

GradeChemical composition WT %
CMnSiPSCrMoNiNVTiCuWB
93100.07 - 0.130.40 - 0.700.15 - 0.35Max 0.015Max 0.0151.00 - 1.4000.083.00 - 3.50---Max 0.035-Max 10PPM
UNS G93100













12Ch2N4A, 12Kh2N4A, 12Х2Н4А0.09 - 0.150.30 - 0.600.17 - 0.37Max 0.025Max 0.0251.25 - 1.65Max 0.153.25 - 3.65Max 0.008Max 0.05Max 0.03Max 0.3Max 0.2
655M13, EN36A, EN36B, N3CCH, 36A, 36 A0.10 - 0.160.35 - 0.60-Max 0.035Max 0.0350.70 - 1.00Max 0.13.00 - 3.75---Max 0.4-
16NCD17, 16 NCD 170.12 - 0.18Max 0.50Max 0.50Max 0.030Max 0.0251.00 - 1.400.15 - 0.454.00 - 4.50-----
16 NC 12, 16NC120.12 - 0.18Max 0.50Max 0.50Max 0.030Max 0.0250.50 - 1.00-3.00 - 3.50-----
14 Ni 14, 14Ni14Max 0.17Max 0.70Max 0.30Max 0.025Max 0.02Max 0.3Max 0.123.25 - 3.75-Max 0.05Max 0.03Max 0.4-
14NiCrMo13-4, 1.6657, LW 66570.11- 0.170.30 - 0.600.30 - 0.60Max 0.025Max 0.0350.80 - 1.100.20 - 0.303.00 - 3.50-----
SAEAMS-S-8503 - AISI 3310 - E 3310
0.08 - 0.130.45 - 0.600.20 - 0.35Max 0.025Max 0.0251.40 - 1.75-3.25 - 3.75-----

Mechanical Property of 9310, 14NiCrMo13-4, 1.6657, UNS G93100 Low Alloy Steel

Heat TreatmentTensile Strength RmYield Strength ReElongation in 2Reduction of AreaCore Hardness
Pseudo Carburized 1700° F for 8 hours. Oil quenched, Tempered at 300° F for 2 hours
187 ksi155 ksi15%51%375 Bhn
Pseudo Carburized 1700° F for 8 hours. Slow cool to room temperature. Heat to 1425° F, oil quench. Tempered at 300° F for 2 hours
155 ksi130 ksi15.5%52%331 Bhn
Pseudo Carburized 1700° F for 8 hours. Slow cool to room temperature. Heat to 1525° F, oil quench. Tempered at 300° F for 2 hours
175 ksi155 ksi16%53%363 Bhn
  • Tensile strength, Rm = ≥ 1130 MPa
  • Yield point, Re = ≥ 930 MPa
  • Hardness after softening, HB = ≤ 269
  • Elongation, A = ≥ 10%
  • Notch toughness, KU2 = ≥ 72 J
  • Contraction, Z = ≥ 50%


Physical Property of 9310, 14NiCrMo13-4, 1.6657, UNS G93100 Low Alloy Steel

  • Density: 0.2836 #/in 3
  • Grain Size 5 or finer (as supplied Norm & Temp)
  • Density, ρ = ~7,83 kg/dm³
  • Thermal conductivity , λ20℃ = ~33,5 W⋅m⁻¹ K⁻¹
  • Linear Expansion Factor, α = 11,1⋅10⁻⁶ K⁻¹
  • Heat capacity cp 20-100℃ = 490 J⋅kg⁻¹ K⁻¹

Heat Treatment of 9310, 14NiCrMo13-4, 1.6657, UNS G93100 Low Alloy Steel

TypeProcess
AnnealingHeat throughout to 1475° - 1575° F, then furnace cool
NormalizingHeat throughout to 1650° - 1750° F, then air cool
Carburizing & HardeningCarburize at 1650° - 1700° F, slow cool. To harden, oil quench from 1425-1545 F
TemperAt 250° - 350° F
Approx Case Hardness60 – 62 HRC
Approx Core Hardness331 – 363 BHN
  • Jominy: J 1/16 inch: 41 RC Hardness max
  • Jominy: J 6/16 inch: 32 RC Hardness max

For Material Normalized 1700° F (927° C) with Test Specimen Annealed 1500° F (816° C)


Welding of 9310, 14NiCrMo13-4, 1.6657, UNS G93100 Low Alloy Steel

AISI 9310 alloy steel has good weldability characteristics as it can be welded by a standard process along with the usage of established welding methods.


Machining of 9310, 14NiCrMo13-4, 1.6657, UNS G93100 Low Alloy Steel

AISI 9310 alloy steel can be machined by conventional methods and good results are obtained when this alloy steel is machined in the tempered or annealed condition.


Equivalent grades of 9310, 14NiCrMo13-4, 1.6657, UNS G93100 Low Alloy Steel

12Ch2N4A, 12Kh2N4A, 12Х2Н4А, 655M13, EN36A, EN36B, N3CCH, 36A, 36 A, ČSN 16 420, ČSN 16420, ČSN 416420, 16NCD13, 16 NCD 13, 16NCD17, 16 NCD 17, 16 NC 12, 16NC12, 14 Ni 14, 14Ni14, 14NiCrMo13-4, 1.6657, LW 6657, 12Cr2Ni4A, A43123, A 43123, 12Cr2Ni4, AMS-S-8503, AISI E3310, E 3310, AISI 9310