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Exhaust Valves High Performance Alloys , Iron Nickel Base Alloy Corrosion Resistance

China Machinery Metal Jiangsu Co., Ltd.

Exhaust Valves High Performance Alloys , Iron Nickel Base Alloy Corrosion Resistance

Brand Name : CMMC

Model Number : As per specification and drawing

Certification : ISO 9001, AS9100 etc.

Place of Origin : CMMC in CHINA

MOQ : Negotiable

Price : Negotiable

Payment Terms : D/P, L/C, T/T

Supply Ability : 100 metric tons per month

Delivery Time : 60-90 days

Packaging Details : Water prevent, seaworthy transport, non-fumigation wooden box

Material : UNS S66315, a precipitation hardenable, iron-nickel base alloy

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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

Exhaust Valves High Performance Alloys , Iron Nickel Base Alloy Corrosion Resistance

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

Exhaust Valves High Performance Alloys , Iron Nickel Base Alloy Corrosion Resistance

SURFACE CONDITION OF EXHAUST VALVE

Exhaust Valves High Performance Alloys , Iron Nickel Base Alloy Corrosion Resistance

PRODUCTION SITE OF EXHAUST VALVE

Exhaust Valves High Performance Alloys , Iron Nickel Base Alloy Corrosion Resistance

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 / /

(3) Hardness vs. Temperature

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

Exhaust Valves High Performance Alloys , Iron Nickel Base Alloy Corrosion Resistance

(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


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