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AerMet® 100 is an ultra-high strength type of martensitic (a very hard form of steel crystalline structure) steel alloy.
Is was developed in response to a need for a stronger and tougher material with superior fracture toughness and ductility. The alloy possesses a minimum tensile strength of 280 ksi (1930 MPa) and a minimum fracture toughness of 100 Ksi/in. AerMet is weldable requiring no preheating. Since it is not a corrosion resistant alloy, it must be sealed if used in a moist environment. The exceptional properties of hardness, FTT, tensile strength and ductility make this alloy a candidate for application such as landing gear, armor, fasteners, actuators, ordnance, jet engine shafts, drive shafts and structural tubing. AerMet 100 may be considered for use up to about 800° F (427° C).
Chemical Composition:
| Element | min | max |
| Carbon | 0.21 | 0.25 |
| Manganese | - | 0.10 |
| Silicon | - | 0.15 |
| Phosphorus | - | 0.008 |
| Sulfur | - | 0.005 |
| Chromium | 2.90 | 3.30 |
| Cobalt | 13.00 | 14.00 |
| Molybdenum | 1.10 | 1.30 |
| Titanium | - | 0.015 |
| Aluminum | - | 0.015 |
| Oxygen | - | 0.0020 (20 ppm) |
| Nitrogen | - | 0.0015 (15 ppm) |
| Nickel | 11.00 | 12.00 |
| Iron | - | *Balance |
Fabrication and Working Instructions:
AerMet 100 can be difficult to machine at HRC 38. In order to mitigate that, carbide tools are recommended at 280 to 350 SFM. After the machining process, stress relieve at 800°F (427°C) is recommended for 1-3 hours.
Forging, on the other hand, should start at a temperature of 2250°F (1232°C) for first break down. Then, the part should be finished starting with a temperature of 1800°F (982°C) and down to 1650° F (899°C) for optimization. After the forging is finished, Steel AerMet 100 should be air cooled to room temperature, followed by annealing and normalizing in order to restore properties to the dead zone.
AerMet 100 is weldable without preheating required.
Typical mechanical properties on longitudinal orientation with heat treatment at 1625°F (885°C), one-hour air cooling to achieve -100°F (-73°C) of the previous temperature, and then aging for 5 hours at 900°F (482°C) are listed in the table below:
| Rc | UTS | Elongation | Reduction of Area | Charpy V-notch Impact Energy | FTT K |
| 53.0/54.0 | 285 ksi | 14% | 65% | 30 ft-lbs / 40.67 Nm | 115 Ksi√ in |
Mechanical Properties (Longitudinal)
| Property | Value |
| Tensile Strength | 290 ksi |
| Yield Strength at 0.2% Offset | 245 ksi |
| Elongation in 4D | 10% |
| Reduction of Area | 50% |
Mechanical Properties (Transverse)
| Property | Value |
| Tensile Strength | 290 ksi |
| Yield Strength at 0.2% Offset | 245 ksi |
| Elongation in 4D | 8% |
| Reduction of Area | 35% |
Physical Properties
| Property | Value |
| Density | 0.285 lb /in3 |
| Modulus of Elasticity | 28.2 x 103 ksi |
| Electrical Resistivity | 259.0 ohm-cir-mil/ft at 70.0°F (21°C) |
| Critical Temperature | AC1 - 1065°F (573°C) |
| AC3 - 1525°F (830°C) | |
| Mean Co of Thermal Expansion | Annealed - 6.01 x 10-6 in/in/°F |
| Heat treated - 6.08 x 10-6 in/in/°F |
Mechanical and Physical Properties at a Given Temperature
| Properties | 70°F (21.1°C) | 200°F (93.3°C) | 300°F (148.9°C) | 400°F (204.4°C) | 600°F (316.5°C) | 700°F (371.1°C) | 800°F (426.7°C) | 1000°F (537.8°C) |
| Ultimate Tensile Strength | - | 285 ksi | 270 ksi | 260 ksi | 248 ksi | 237 ksi | 229 ksi | - |
| Yield Strength at 0.2% Offset | - | 250 ksi | 240 ksi | 230 ksi | 218 ksi | 200 ksi | 192 ksi | - |
| Reduction of area | - | 55% | 62% | 64% | 63% | 61% | 60% | - |
| Elongation | - | 14% | 16% | 16% | 16% | 15% | 15% | - |
| Charpy V-notch Impact Energy | - | 50 ft-lb | 52.3 ft-lb | 50 ft-lb | 33.2 ft-lb | 28 ft-lb | 27.2 ft-lb | - |
| Modulus of Elasticity | 28.2 x 103 ksi | - | - | - | - | - | - | - |
Specification
| Size | Round | Dia 6-1200mm |
| Plate/Flat/Block | Thickness 6mm-500mm | |
| Width 20mm-1000mm | ||
| Heat treatment | Normalized ; Annealed ; Quenched ; Tempered | |
| Surface condition | Black; Peeled; Polished; Machined; Grinded; Turned; Milled | |
| Delivery condition | Forged; Hot rolled; Cold drawn | |
| Test | Tensile strength, Yield strength, elongation, area of reduction, impact value, hardness, grain size, ultrasonic test, US inspection, magnetic particle testing, etc. | |
| Payment terms | T/T;L/C;/Money gram/ Paypal | |
| Trade terms | FOB; CIF; CNF | |
| Delivery time | 20-25 days | |
| Application | Structural parts of medium and large cross sections and high surface hardness, e.g., valve and gate valves, cylinders for combustion engines, superheated steam valves and fittings. | |
Below inspection will be done in the production.
(1) ray detection---RT;
(2) ultrasonic testing---UT;
(3) Magnetic Particle Testing-MT;
(4) penetration testing-PT;
(5) eddy current flaw detection-ET
EN 10204/3.1 with all relevant data reg. chem. composition, mech. properties and results of testing.
| COLD WORK TOOL STEEL | |||||
| Grade | AISI /ASTM | DIN (W.Nr) | JIS | EN/ BS | GB |
| DC53 | higher than D2 | SKD11 | XW-5 | Cr8Mo2Vsi | |
| D2 | D2 | 1.2379 | SKD11 | BD2 | CR12MO1V1 |
| Cr12MoV | CR12MOV | ||||
| D3 | D3 | 1.2080 | SKD1 | BD3 | CR12 |
| O1 | O1 | 1.2510 | SKS3 | 9CRWMN | |
| HMD5 | HMD5 | 7CrSiMnMoV | |||
| 5CrNiMo | L6 | 55NiCrMoV6 | SKT4 | 5CrNiMo | |
| 52100 | 52100 | 1.3505 | EN31 | GCR15 | |
| HOT WORK TOOL STEEL | |||||
| H13 | H13 | 1.2344/1.2342 | SKD61/DAC | 8407 | 4CR5MOSIV1 |
| FDAC | 1.2347 | FDAC | FDAC | ||
| H11 | H11 | 1.2343 | SKD6 | H11 | |
| 3Cr2W8V | H21 | 1.2581/ X30WCrV93 | SKD5 | BH21 | 3CR2W8V |
| PLASTIC MOULD STEEL | |||||
| P20 | P20 | 1.2311 | HPM7/PX88 | 618 | 3CR2MO |
| 718 | P20+NI | 1.2738 | PX4/PX5 | 718 | 3CR2NIMO |
| S136 | 420 | 1.2083 | S-STAR | S136 | 4CR13 |
| NAK80 | P21 /P20+S | 1.2312 | NAK80 | 15NI3MN | |
| HIGH SPEED STEEL | |||||
| M2 | M2 | SKH51 | W6MO5CR4V2 | ||
| M42 | M42 | S2-10-1-8 | SKH59 | W2MO9CR4VCO8 | |
| ALLOY STRUCTURE STEEL | |||||
| Grade | AISI /ASTM | DIN (W.Nr) | JIS | EN/ BS | GB |
| 5120 | 5120 | 1.7027 /21Cr4 | SCr420 | 20Cr | |
| 530M40 /5140 | 530M40 /5140 | 1.7035 /41Cr4 | SCr440 | 40Cr | |
| 5145 | 5145 | Scr445 | 45CR4 | ||
| 4118 | 4118 | 1.7243 /18CrMo4 | SCM418 / SCM420 | 20CrMo | |
| 4135 | 4130 | 1.7218 /25CrMo4 | SCM430 | 708A25/ 708M25 | 30CrMo |
| 4140 | 4140 | 1.7225 /42CrMo4 | SCM440 | EN19/ 709M40 | 42CrMo |
| 4340 | 4340 | 1.6582/ 34CrNiMo6 | SNCM 439/ SNCM8 | EN24/ 817M40 | 40CrNi2Mo |
| 8620 | 8620 | 1.6523/ 21NiCrMo2 | SNCM220 | 805M20 | 20CrNiMo |
| CARBON STEEL | |||||
| 20 | 1020 | C22. CK22 | S20C | EN3B /070M20 | 20 |
| 35 | 1035 | C35.CK35 | S35C | 35 | |
| 45 | 1045 | C45.CK45 | S45C | EN8D/C45E | 45 |
| 50 | 1050 | CK53 | S50C | EN9/070M55 | 50 |
| Q355 | S355J /ST52 | EN14 | Q355 | ||
| 30Mn | 1030.1033 | S30C | 30Mn | ||
| 30Mn2 | 1330 | 30Mn5 | SMn433h | 30Mn2 | |
| STAINLESS STEEL | |||||
| steel grades: 304, 304L, 316, 316L, 321, 410 430, 431, 2205, 2304, 2507. F53, F55 | |||||
