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UNS G98400

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UNS G98400 properties and heat treatment forged piece, Including UNS G98400 application and specifications, We have all specifications,Including UNS G98400 steel plate, UNS G98400 sheet, UNS G98400 square steel, UNS G98400 flat bar,UNS G98400 round bar,UNS G98400 forgings, we can own production and sales.


Introduction to Our Products:

Specialized high quality steel

We have the advantages of equipment, technologies and price

forged/hot rolling/ extrusion of steel


We can produce the UNS G98400 has the following specifications:

Round bar steel: 1mm to 3000mm

Square-shape steel: 1mm to 2000mm

Plate steel:0.1mm to 2500mm

Width: 10mm to 2500mm

Lenth: We can supply any lenth based on the customer's requirement.

Forging: Shafts with flanks/pipes/tubes/slugs/donuts/cubes/other shapes

Tubings: OD: φ6-219 mm, with wall thickness ranging from 1-35 mm.

Finished goods condition: hot forging/hot rolling + annealing/normalizing + tempering/quenching + tempering/any conditions based on the customer's requirement

Surface conditions: scaled (hot working finish)/ground/rough machining/fine machining/based on the customer's requirement

Furnaces for metallurgical processing: electrode arc + LF/VD/VOD/ESR/Vacuum consumable electrode.

Ultrasonic inspection: 100% ultrasonic inspection for any inperfections or based on the customer's requirementExcellent service for all kinds of industries,with advantages of technologies, equipment and price.

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Chemical composition % of the ladle analysis of grade UNS G98400 and Standards

AISI 9840 steel, 540°C (1000°F) temper, 25 mm (1 in.) round
Categories: Metal; Ferrous Metal; Alloy Steel; AISI 9000 Series steel; Low Alloy Steel; Carbon Steel; Medium Carbon steel

Material Notes: Quenched, 540°C temper, 525°C nitride for 40 hours with 20-30% ammonia dissociation, hardness of 88 HR15N case hardness at 0.635-0.762 mm nitrided case depth

Key Words: UNS G98400, AMS 6342 C, ASTM A274, ASTM A322, ASTM A519, SAE J778, DIN 1.6511, UNI 38 NiCrMo 4, B.S. 816 M 40

Physical Properties Metric English Comments
Density  7.87 g/cc 0.284 lb/in³ field average for steels
 
Mechanical Properties Metric English Comments
Hardness, Brinell  361 361
Hardness, Knoop  390 390 Converted from Brinell hardness.
Hardness, Rockwell B  100 100 Converted from Brinell hardness.
Hardness, Rockwell C  35 35 core hardness. Quenched, 540°C temper, 525°C nitride for 40 hours with 20-30% ammonia dissociation
Hardness, Vickers  382 382 Converted from Brinell hardness.
Tensile Strength, Ultimate  1240 MPa 180000 psi
Tensile Strength, Yield  1105 MPa 160300 psi
Elongation at Break  15.0 % 15.0 % in 50 mm
Modulus of Elasticity  200 GPa 29000 ksi Estimated
Bulk Modulus  140 GPa 20300 ksi Typical for steel.
Poissons Ratio  0.290 0.290 Calculated
Machinability  70 % 70 % Estimated
Shear Modulus  80.0 GPa 11600 ksi Typical for steel
 
Electrical Properties Metric English Comments
Electrical Resistivity  0.0000174 ohm-cm 0.0000174 ohm-cm Estimated
 
Thermal Properties Metric English Comments
CTE, linear 11.5 µm/m-°C
@Temperature 20.0 °C
6.39 µin/in-°F
@Temperature 68.0 °F
  12.2 µm/m-°C
@Temperature 250 °C
6.78 µin/in-°F
@Temperature 482 °F
Estimated
  13.9 µm/m-°C
@Temperature 500 °C
7.72 µin/in-°F
@Temperature 932 °F
  14.7 µm/m-°C
@Temperature 1000 °C
8.17 µin/in-°F
@Temperature 1830 °F
Specific Heat Capacity  0.472 J/g-°C 0.113 BTU/lb-°F Estimated
Thermal Conductivity  51.9 W/m-K 360 BTU-in/hr-ft²-°F Typical steel
 
Component Elements Properties Metric English Comments
Carbon, C  0.380 - 0.430 % 0.380 - 0.430 %
Chromium, Cr  0.700 - 0.900 % 0.700 - 0.900 %
Iron, Fe  95.945 - 97.02 % 95.945 - 97.02 % As remainder
Manganese, Mn  0.700 - 0.900 % 0.700 - 0.900 %
Molybdenum, Mo  0.200 - 0.300 % 0.200 - 0.300 %
Nickel, Ni  0.850 - 1.15 % 0.850 - 1.15 %
Phosphorous, P  <= 0.0350 % <= 0.0350 %
Silicon, Si  0.150 - 0.300 % 0.150 - 0.300 %
Sulfur, S  <= 0.0400 % <= 0.0400 %

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M984AA / 8711
 




Machining performance

Download UNS G98400 the mechanical properties of the report, the report provides detailed performance analysis and application. Download >>


Principal Design Features

One of the most widely used precipitation hardening grades in the business. While soft and ductile in the solution annealed condition, it is capable of high properties with a single precipitation or aging treatment. Characterized by good corrosion resistance, high harness, toughness and strength.


Machinability

Long, gummy chips characterize this alloys machinability. It can be machined in the annealed condition, however condition H1150M will yield best results. Post machining solution treatment of parts will be required prior to final hardening if machining in this condition.


Heat Treatment

CONDITION A--Soak at 1900 F (1038 C) for 30 minutes and cool below 60 F (16 C) for complete martensite transformation. CONDITION H 950- Treat Condition A material at 900 F(482 C) for 1 hour, air cool.. CONDITION H925, H1025, H1075, H1100, H1150- Soak solution treated material for 4 hours at specified temperature, air cool, CONDITION H1150M- Soak solution treated material at 1400 F (760 C) for 2 hours, air cool, then re-heat to 1150 F (620 C) for 4 hours and air cool.


Welding

Successfully welded by common fusion and resistance methods, this alloy should not be joined by oxyacetylene welding. AWS E/ER630 filler metal is recommended if required.


Forging

Soak for 1 hour at 2150 F (1177 C) prior to forging. Do not work below 1850 F (1010 C). Post-work solution treatment is required prior to final hardening.





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