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Product Details:
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| Material: | UNS S66315, A Precipitation Hardenable, Iron-nickel Base Alloy | ||
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| High Light: | high performance alloys,high strength special alloys |
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Alloy 3015 (3015 alloy) for high power internal combustion engine exhaust valves
PRODUCT
Alloy 3015 (3015 alloy) for high power internal combustion engine (diesel engine and gasoline engine) exhaust valves for automobile, locomotive, tractor, ship, tank, oil rig, construction machinery and mobile power station, etc. Also could be for high strength fasteners at elevated temperatures.
EQUIVALENT DESIGNATION
UNS S66315, CarTech® NCF 3015 Alloy
PRODUCT FORM
Alloy 3015 is available in forms of bar, rod, strip, forging, forging block, etc.
APPLICATION
Because of its excellent strength and corrosion resistance at elevated temperatures, Alloy 3015 could be considered for engine valve applications, and also could be considered as a replacement for nickel-base super alloys in applications involving the need for strength at elevated temperatures such as fasteners.
OVERVIEW
Alloy 3015 is a precipitation hardenable, iron-nickel base alloy with mechanical properties between those of the iron-base and the more costly nickel-base alloys that have been used for engine valve applications. The alloy was designed for high strength and corrosion resistance up to 1400°F(760°C).
SKETCH OF EXHAUST VALVE
PRODUCTION PROCEDURE OF EXHAUST VALVE
Blanking → Electric heating upsetting forging of head blank → Heat treatment of head blank and rod → Friction welding → Rough turning or grinding → Finish turning → Cut fixed length → Semi-fine grinding the stem → The valve stem chrome plating → Fine grinding the stem → NDT of the finished valve → Delivery
SURFACE CONDITION OF EXHAUST VALVE
PRODUCTION SITE OF EXHAUST VALVE
CHEMICAL COMPOSITION (wt%):
| Fe | Ni | Mo | Cr | Ti | Nb |
| Balance | 30.0-33.5 | 0.40-1.00 | 13.5-15.5 | 2.30-2.90 | 0.40-0.90 |
| C | Al | Mn | Si | P | S |
| ≤0.08 | 1.60-2.20 | ≤0.50 | ≤0.50 | ≤0.015 | ≤0.010 |
PHYSICAL PROPERTY
Density: 0.2840 lb/in3 (7.88g/cm3)
Melting range: 2400 - 2550°F (1316 - 1399°C)
Electric resistivity: 643.0 ohm-cir-mil/ft at 72°F (22°C)
Magnetic permeability: 1.0170Mu at 200 oersted (15.9 kA/m)
Mean coefficient of thermal expansion
| Temperature | Mean coefficient of thermal expansion | ||
| 77°F to | 25°C to | x 10-6 in/in/°F | 10-6 µm/m °C |
| 212 | 100 | 8.3 | 14.9 |
| 392 | 200 | 8.7 | 15.6 |
| 572 | 300 | 8.9 | 16 |
| 752 | 400 | 9 | 16.2 |
| 932 | 500 | 9.2 | 16.5 |
| 1112 | 600 | 9.3 | 16.7 |
| 1202 | 650 | 9.3 | 16.8 |
| 1292 | 700 | 9.3 | 16.8 |
| 1382 | 750 | 9.7 | 17.4 |
| 1472 | 800 | 10.2 | 18.3 |
Modulus of elasticity
| Temperature | Modulus of elasticity | ||
| °F | °C | x 103 ksi | x 103 MPa |
| 72 | 22 | 29 | 200 |
| 1200 | 649 | 22 | 152 |
| 1400 | 760 | 20 | 138 |
MECHANICAL PROPERTIES
(1) Charpy V notch impact strength
Tests on 0.625"(16mm) round bar, heat treatment 1922°F(1050°C) / 0.5 hour / oil quench + 1382°F(750°C) / 4 hours / AC
| Temperature | Impact strength | ||
| °F | °C | ft-lb. | J |
| 70 | 21 | 83 | 113 |
(2) Elevated temperature stress rupture properties
Tests on 0.625"(16mm) round bar, heat treatment 1922°F(1050°C) / 0.5 hour / oil quench + 1382°F(750°C) / 4 hours / AC
| Temperature | Stress to produce rupture in: | ||||||
| 10 hours | 100 hours | 400 hours | |||||
| °F | °C | ksi | MPa | ksi | MPa | ksi | MPa |
| 1350 | 732 | / | / | 55 | 380 | 40 | 276 |
| 1500 | 816 | 39 | 269 | 23 | 159 | / | / |
Tests on 0.625"(16mm) round bar, heat treatment 1922°F(1050°C) / 0.5 hour / oil quench + 1382°F(750°C) / 4 hours / AC
(4) Tensile strength
Tests on 0.625"(16mm) round bar, heat treatment 1922°F(1050°C) / 0.5 hour / oil quench + 1382°F(750°C) / 4 hours / AC
| Temperature | 0.2% Yield strength | Ultimate tensile strength | Elongation in 4D % | Reduction of area % | |||
| °F | °C | ksi | MPa | ksi | MPa | ksi | MPa |
| 70 | 21 | 95 | 655 | 163 | 1124 | 35 | 54 |
| 800 | 427 | 90 | 621 | 145 | 1000 | 34 | 55 |
| 1000 | 538 | 89 | 614 | 143 | 986 | 32 | 53 |
| 1200 | 649 | 98 | 676 | 138 | 952 | 17 | 20 |
| 1400 | 760 | 82 | 565 | 92 | 634 | / | / |
WORKING INSTRUCTION
Hot working
Alloy 3015 can be forged within the temperature range of 1700/2000°F (927/1093°C). Careful control of the hot working temperature and frictional heat buildup is necessary to avoid hot shortness above 2000°F (1093°C). Alloy 3015 is significantly less resistant to deformation at 1700/2000°F (927/1093°C) than nickel-base Alloy 751.
Cold working
Because of higher ductility and lower tensile or compressive strength, the cold workability of Alloy 3015 is better than that of precipitation hardenable nickel-base alloys like Alloy A-286, it is stiffer than austenitic stainless steels and work hardens rapidly.
Solution treatment
Heat to 1922°F (1050°C), hold at temperature for a minimum of 30 minutes, then oil quench.
Age treatment
Reheat to 1382°F (750°C), hold at temperature for 4 hours, then air cool.
Grinding and Polishing
The grinding characteristics of Alloy 3015 are similar to those of alloy 751.
COMPETITIVE ADVANTAGE:
(1) More than 50 years experience of research and develop in high temperature alloy, corrosion resistance alloy, precision alloy, refractory alloy, rare metal and precious metal material and products.
(2) 6 state key laboratories and calibration center.
(3) Patent technologies.
(4) Average grain size 9 or finer.
(5) High performance
BUSINESS TERM
| Minimum Order Quantity | Negotiable |
| Price | Negotiable |
| Packaging Details | Water prevent, seaworthy transport, non-fumigation wooden box |
| Mark | As per order |
| Delivery Time | 60-90 days |
| Payment Terms | T/T, L/C at sight, D/P |
| Supply Ability | 100 metric tons per month |
Contact Person: Mr. lian
Tel: 86-13913685671
Fax: 86-510-86181887
