General Product Description
Armour steel with high hardness and toughness and with resistance to ballistic penetration.
Protection 500T; it is supplied in order thickness of 4.00 – 24.00 mm and hardness range of 480-560 HBW.
Heat Treatment Condition
Quenched and Tempered.
Protection 500T is not suitable for the secondary heat treatments by the user. In case it is heated above 180°C after receipt from Miilux, no guarantees are provided.
Tolerances
“EN 10029” or “EN 10051” standards are applied in dimensional tolerances.
“EN 10029” Class C tolerances are guaranteed for thickness. Thickness tolerance application is according to “Narrowed Miilux Thickness Tolerances” which is more restrictive than “EN 10029” Class C.
EN 10029 Class N, Steel Type H tolerances are guaranteed for the planarity.
Surface Condition
EN 10163-2 (Class B, Subclass 3) standard is guaranteed for the surface defects.
The surface of the Steel Plates is sandblasted according to ISO 8501-1 Sa 2½ quality.
Unless otherwise specified, shop primer is applied to Miilux products, which has been specially developed in order to provide very high welding and cutting speed after the sandblasting, with very low welding porosity and very low burning rate in the reverse area.
The shop primer protects the structure against atmospheric corrosion during the storage. It is applied at a thickness of 15-25 microns (these values are specified for a smooth test panel).
The paint type, which is used, has a performance suitable for the processes of welding and cutting.
Marking is done with Punch.
Marking is done with paint.
Dimensions and Delivery Conditions
Miilux products are supplied with a maximum width of 2500 mm and a maximum length of 8000 mm. Special size requests should be discussed at the ordering stage.
By negotiating at the order stage, Miilux products can be supplied as component parts that are cut ready for assembly in accordance with the customer’s request.
Requests for Protection 500T in other sizes should be discussed at the order stage.
Ultrasonic Testing
It can be done in accordance with EN ISO 10160. Contact Miilux Sales, at the order stage, for the application class.
Ballistic Features
Miilux Protection 280T Ballistic Performance meets “MIL-DTL-12560 Class 2” requirements.
Miilux Sales team should be contacted, at the order stage, for order-specific test requests.
Each customer is obliged to verify the requested plate thickness, to evaluate the suitability of the information provided to the request and the potential risks according to the area of use.
Miilux Yuksek Mukavemetli Celik Uretim A.Ş. reserves the right to change product groups and tolerances without prior notification. You can contact our Customer Technical Services Team for information about different tests.
Narrowed Miilux Thickness Tolerances
| Sheet Thickness (mm) | Tolerances (mm) |
|---|---|
4 – 8 |
- 0.0 + 0.60* |
| 6 – 7.99 | - 0.0 + 0.80** |
| 8 – 14.99 | - 0.0 + 0.90** |
| 15 – 24.00 | - 0.0 + 1.00** |
Other thicknesses are accepted subject to negotiation.
* Sheet from Coil (Without the Edge-Cut)
** Sheet (With the Edge-Cut)
Chemical Composition Compound (Ladle Analysis)
| Steel Quality | Steel Type | Thickness (mm) | C | Si | Mn | P | S | Cr | Ni | Mo | B | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Miilux Protection 500T |
High Hardness Armor Steel (HHA) |
4.00-24.00 |
0.32 |
0.70 |
1.20 |
0.015 |
0.005 |
0.90 | 1.20 | 0.50 |
0.003 |
Typical Mechanical Features
| Product Quality | Thickness (mm) | *Yield Strength (Rp) 0,2 N/mm² |
*Tensile Strength (Rm) N/mm² |
*Elongation (A5%) | Impact Charpy-V -40°C Joule (Min.) |
Hardness Ranges (HBW) |
**CEV | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Miilux Protection 500T |
4.00-24.00 |
1200 | 1450-1750 |
7 | 24 | 480-560 |
0.72 |
*They are the typical values
**CE = C + [Mn/6] + [(Cr + Mo + V) /5] + [(Ni + Cu) /15]
Brinell hardness test is applied on every armour steel in accordance with EN ISO 6506-1 principles. If the thickness of the hardness measurement area is thinner than 4.75 mm, the 5/750 HBW measurement method is used. For other thicknesses, the 10/3000 HBW method is used.
The hardness tests are performed on the machined surface at a depth of 0.50 – 1.00 mm from the armour steel surface.
Charpy V-Notch Impact Test is applied in perpendicular and parallel directions to the rolling direction in all castings and thickness* in accordance with EN ISO 148-1 principles.
For products thinner than 11.00 mm nominal thickness, sub-size samples are used. The determined minimum impact value is then proportional to the test specimen’s cross-sectional area. (*in order thickness of 6.00 mm and thicker armour steel)
Order-specific test requests should be discussed with Miilux Sales team at the order stage."
Tipik Balistik Özellikler
| Ballistic Protection Level | Test Plate Thickness (nominal)(mm) | Caliber (mm) | Ammunition Type | Ammunition Weight (gr) | Shooting Distance (m) | Ammunition Speed V2,5 (m/s) |
|---|---|---|---|---|---|---|
| EN 1522 FB5 | 6.00 | 5,56x45 7,62x51 |
SS109 (M855) M80 Nato Ball |
4.0 9.5 |
10 | 950 ± 10 830 ± 10 |
| STANAG 4569 Level 1 | 6.00 6.00 9.00 |
7,62x51 5,56x45 5,56x45 |
M80 Nato Ball SS109 (M855) M193 |
9.5 4.0 3.5 |
30 | 833 ± 20 900 ± 20 937 ± 20 |
| STANAG 4569 Level 2 | 12.00 | 7,62x39 | API BZ | 7.7 | 30 | 695 ± 20 |
| EN 1522 FB7 | 14.00 |
7,62x51 |
P80 Nato AP |
9.5 | 10 | 820 ± 10 |
| STANAG 4569 Level 3 | 16.00 24.00 |
7,62x54R 7,62x51 |
B32 API AP(WC Core) |
10.3 8.4 |
30 | 854 ± 20 930 ± 20 |
Miilux Sales team should be contacted, at the order stage, for order-specific test requests.
Each customer is obliged to verify the requested plate thickness, and to evaluate the suitability of the information provided to the request and the potential risks according to the area of use.
Miilux Yuksek Mukavemetli Celik Uretim A.Ş. reserves the right to change product groups and tolerances without prior notification. You can contact our Customer Technical Services team in order to get the information on different tests.
Processing
Miilux products can be machined using high speed tool steels (HSS) with the appropriate combination of machining tool speed and feed rate, resulting in a satisfactory service life.
Welding
Miilux Protection® 500T is applied with limited heat input and maximum welding energy. In Miilux Protection® 500T, pre-annealing is required when the combined wall thickness is over 20 mm. Austenitic welding consumables should be used, the pre-annealing temperature should be at least 70% of the working temperature and the weld termination temperature should not exceed the working temperature by more than 30%.
Cold Forming
Sharp transition angles should be avoided as much as possible when cold forming the Miilux products. In addition, the importance of the condition of the equipment used in the operations, the operation plan and good workshop practices should be taken into the consideration. The Cold Forming limits table is given below.
| Product | Sheet Thickness (mm) | Air bending < 90° Press radius / Plate thickness (r/t) (Bend direction in rolling direction) | Air bending - Die Opening / Sheet thickness | ||
|---|---|---|---|---|---|
| Transversal | Longitudinally | Transversal | Longitudinally | ||
Miilux® 500 |
4-24 |
6,0 |
8,0 |
15,0 |
19,0 |
