aisi 1144
aisi 1144 properties and heat treatment forged piece, Including aisi 1144 application and specifications, We have all specifications，Including aisi 1144 steel plate, aisi 1144 sheet, aisi 1144 square steel, aisi 1144 flat bar,aisi 1144 round bar,aisi 1144 forgings, we can own production and sales.
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forged/hot rolling/ extrusion of steel
We can produce the aisi 1144 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 aisi 1144 and Standards
Applications include cold drawn or finished bar, cold punched nuts, split rivets, machine screws, and wood screws.
UNS G11440, ASTM A29, ASTM A108, ASTM A311, FED QQ-S-637 (C1144), SAE J403, SAE J412, SAE J414
| Physical Properties | Metric | English | Comments |
|---|---|---|---|
| Density | 7.87 g/cc | 0.284 lb/in³ | Typical for steel. |
| Mechanical Properties | Metric | English | Comments |
| Hardness, Brinell | 212 | 212 | |
| Hardness, Knoop | 235 | 235 | Converted from Brinell hardness. |
| Hardness, Rockwell B | 94 | 94 | Converted from Brinell hardness. |
| Hardness, Rockwell C | 16.0 | 16.0 | Converted from Brinell hardness. Value below normal HRC range, for comparison purposes only. |
| Hardness, Vickers | 223 | 223 | Converted from Brinell hardness. |
| Tensile Strength, Ultimate | 705 MPa | 102000 psi | |
| Tensile Strength, Yield | 420 MPa | 60900 psi | |
| Elongation at Break | 21.0 % | 21.0 % | |
| Reduction of Area | 41.0 % | 41.0 % | |
| Modulus of Elasticity | 200 GPa | 29000 ksi | Typical for steel |
| Bulk Modulus | 140 GPa | 20300 ksi | Typical for steel. |
| Poissons Ratio | 0.290 | 0.290 | Typical For steel |
| Izod Impact | 43.0 J | 31.7 ft-lb | normalized at 900°C (1650°F) |
| 53.0 J | 39.1 ft-lb | as rolled | |
| 65.0 J | 47.9 ft-lb | annealed at 815°C (1500°F) | |
| Shear Modulus | 80.0 GPa | 11600 ksi | Typical for steel. |
| Electrical Properties | Metric | English | Comments |
| Electrical Resistivity | 0.0000170 ohm-cm | 0.0000170 ohm-cm | condition of specimen unknown; 20°C (68°F) |
| 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 |
Typical steel |
| 12.2 µm/m-°C @Temperature 0.000 - 300 °C |
6.78 µin/in-°F @Temperature 32.0 - 572 °F |
Typical for steel | |
| 13.9 µm/m-°C @Temperature 0.000 - 500 °C |
7.72 µin/in-°F @Temperature 32.0 - 932 °F |
Typical for steel | |
| Specific Heat Capacity | 0.472 J/g-°C | 0.113 BTU/lb-°F | Typical steel |
| Thermal Conductivity | 51.9 W/m-K | 360 BTU-in/hr-ft²-°F | Typical steel |
| Component Elements Properties | Metric | English | Comments |
| Carbon, C | 0.40 - 0.480 % | 0.40 - 0.480 % | |
| Iron, Fe | 97.5 - 98.01 % | 97.5 - 98.01 % | As remainder |
| Manganese, Mn | 1.35 - 1.65 % | 1.35 - 1.65 % | |
| Phosphorous, P | <= 0.040 % | <= 0.040 % | |
| Sulfur, S | 0.240 - 0.330 % | 0.240 - 0.330 % | |
Machining performance
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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.