Color Code: MAROON-13
Ameralloy-13 is a chromium-molybdenumvanadium hot work steel with high vanadium content which increases its wash resistance. In addition, the alloy content minimizes heat checking at high operating temperatures.
Ameralloy-13 is best used for long run zinc and magnesium die casting dies; also in forging, heading, and extruding applications where toughness, impact, strength and hot work steel qualities are essential. Ameralloy-13 requires a relatively simple heat treatment and can be quenched in air with a minimum of distortion. It may also be quenched in oil with satisfactory results.
Typical Analysis
- Carbon .40
- Manganese .40
- Chromium 5.25
- Silicon 1.10
- Molybdenum 1.50
- Vanadium 1.10
Features And Advantages
- High resistance to heat checking
- Good red hardness
- Good shock resistance
- Good machinability
- Good dimensional stability
- Excellent hardenability
Applications
Die Casting(aluminum, long run zinc, magnesium)
- Cylinder liners
- Die casting nozzles (aluminum)
- Cams (die casting machines)
- Plunger and tip
- Dies
- Cores
- Ejector pins
- Sleeves
Forging And Heading (steel, brass, and aluminum)
- Cold heading dies, hot press dies
- Drop forging die inserts
- Forging machine dies and plungers
- Hot heading dies, hot trim dies
- Hot work rolls
- Bolt dies, rivet dies, bull dies, gripper dies,
- bending dies, swagging dies
- Shear blades, punches, nut piercers
Extrusion
- Extrusion dies
- Extrusion press liners
- Extrusion rams
- Rolls
- Dummy blocks, backer blocks
- Cylinders
When maximum hardness is the primary requirement, Ameralloy-13 may be oil-quenched. But keep in mind that when oil-quenched this grade is as vulnerable to cracking as and has the same distortional characteristics as an oil hardening tool steel.
Ameralloy-tested Rockwell hardness and fracture grain ratings for specimens 1” round by 3” long, preheated to 1350°F. Various quenching methods and temperatures listed.
| Quenching Temperature (F°) | Fracture Grain Size | Rockwell C |
|---|---|---|
| 1750° | 8½ | 46 |
| 1800° | 8¾ | 52 |
| 1850° | 9 | 54 |
| 1900° | 9 | 54 |
| 1950° | 9 | 55 |
| 2000° | ½ | 56 |
Tempering For hot work applications, Ameralloy-13 is used in the hardness range of HRC 38–48. The usual hardness range for die casting dies is HRC 44–48, requiring a temper at approximately 1100°F. For improved shock resistance, the steel is often tempered at temperatures approaching 1150°F, resulting in a hardness range of HRC 40–44. The steel should be held at tempering temperature for at least 2 hours per inch of greatest cross section. All hot work steel should be tempered at a minimum of 50°F above the expected maximum operating temperature of the tool or die. Double tempering, with the second temper 25°–50°F lower than the first temper, is always advisable, particularly where heat checking is a problem.
Resulting Rockwell hardness for various tempering temperatures. Obtained from 1” round quenched from 1850°F and tempered for 2 hours
| Tempering Temperature (°F) | Rockwell C |
|---|---|
| 400° | 54 |
| 500° | 53 |
| 600° | 43 |
| 700° | 53 |
| 800° | 53 |
| 900° | 54 |
| 1000° | 52 |
| 1100° | 46 |
| 1200° | 36 |
Above results on 1” diameter specimens may be used as a guide in tempering tools to desired hardness. Tools of heavy section or mass may be several points lower in Rockwell hardness for a given treatment.
General Instructions
Forging Large pieces of Ameralloy-13 should be preheated slowly to 1300°–1500°F, and thoroughly soaked before heating rapidly to the forging temperature of 2050°–2150°F. The steel should be thoroughly heated before beginning the forging operation. Do not forge below 1650°F, but reheat as many times as necessary. After forging is completed, the steel should be slowly cooled by burying in a heat-insulating material such as dry ashes, lime, or vermiculite.
Annealing Ameralloy-13 may be annealed by heating to 1600°F. Soak 1 hour per inch of greatest thickness, and furnace cool at 30°F per hour to 900°F. Then air cool. Proper annealing procedure includes packing in a steel container using a neutral inert material. Maximum Brinell hardness of 207.
Hardening In a controlled atmosphere, preheat thoroughly to 1300°–1400°F. Then heat to 1850°F and hold for 1 hour per inch of greatest cross section. Quench in still air and temper immediately.
Available Shapes And Size
- Rounds
- Flats
- Squares
ROUNDS: Standard lengths 8’–10’ R/L. FLATS & SQUARES: Standard lengths 8’–12’ R/L. Specify O.D. and I.D. Modified and special sizes available upon request. Prompt forging service available.
Flats Pre-machined / Annealed
| 3/4 x 1-1/4 1 x 4 x 6 x 8 x16 1-1/2 x 2 x 3 x 4 x 5 x 6 x 8 x 12 x 14 2 x 3 x 4 x 5 x 6 x 8 x 10 x 12 x 16 2-1/4 x 2-1/2 x 2-3/4 |
x 3 x 3-1/2 2-1/2 x 2-3/4 x 3 x 4 x 5 x 6 x 8 x 10 x 12 x 14 x 18 2-3/4 x 3 x 4 3 x 3-1/2 x 4 x 6 x 7 x 8 x 10 x 12 x 14 x 16 x 18 x 20 |
3-1/4 x 3-1/2 3-1/2 x 6 x 10 x 12 x 14 x 16 4 x 5 x 8 x 10 x 12 x 14 x 16 x 18 x 20 x 25 4-1/2 x 14 x 16 x 18 x 24 5 x 10 x 12 x 14 x 16 |
x 18 x 20 5-1/2 x 20 6 x 12 x 14 x 16 x 18 x 20 x 25 x 28 7 x 18 x 25 8 x 16 x 20 x 25 x 28 x 30 9 x 12 x 25 x 36 10 x 20 x 25 |
x 30 x 36 10-1/4 x 24 11 x 25 x 28 11-1/2 x 26-1/2 12 x 25 x 36 x 40 13 x 28 14 x 28 x 28-1/2 14-7/8 x 19 15 x 28 x 30 16 x 24 |
RoundsHot Roll/Annealed/Decarb Free/Oversize
| 1/2 5/8 3/4 7/8 1 1-1/8 1-1/4 1-3/8 1-7/16 1-1/2 1-5/8 1-3/4 1-7/8 |
2 2-1/8 2-3/16 2-1/4 2-3/8 2-1/2 2-5/8 2-3/4 3 3-1/8 3-1/4 3-1/2 3-3/4 |
4 4-1/8 4-1/4 4-1/2 4-3/4 5 5-1/4 5-1/2 5-3/4 6 6-1/4 6-1/2 6-3/4 |
7 7-1/2 7-3/4 8 8-1/2 8-3/4 9 9-1/4 9-1/2 9-3/4 10 10-7/16 10-1/2 |
11 11-5/8 12 12-1/2 13 13-1/2 14–18 20 22 |
Centerless Ground Rounds Annealed
| .250 .3125 .820 .881 1.006 1.256 1.3185 |
1.506 1.5685 1.631 1.756 1.881 2.010 2.131 |
2.1935 2-1/4 2-1/2 2.506 2.756 3 3.006 |
3-1/4 3-1/2 3.506 3.990 4 4.006 4-5/16 |
4-1/2 4-3/4 5 5-1/2 5-3/4 6 7.795 |
Squares Annealed Billets
| Squares | Billets | |||
|---|---|---|---|---|
| 2-1/4 2-1/2 2-3/4 |
3 3-1/4 4 5 |
6 8 10 |
6 8 10 |
12 14 16 |
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