MATERIALS = [
    {
        "name": "PLA",
        "category": "basic",
        "density_g_cm3": 1.24,
        "price_per_gram": 25.0,
        "flow_rate_mm3_s": 15.0,
        "max_temp_c": 60,
        "min_temp_c": -20,
        "strength": "medium",
        "flexibility": "low",
        "chemical_resistance": "low",
        "uv_resistance": "low",
        "food_safe": True,
        "description": "Базовый пластик. Лёгкий в печати, хорошая детализация. Для прототипов и декора.",
        "color_options": ["white", "black", "gray", "red", "blue", "green", "natural"],
    },
    {
        "name": "PETG",
        "category": "basic",
        "density_g_cm3": 1.27,
        "price_per_gram": 28.0,
        "flow_rate_mm3_s": 12.0,
        "max_temp_c": 80,
        "min_temp_c": -40,
        "strength": "high",
        "flexibility": "medium",
        "chemical_resistance": "medium",
        "uv_resistance": "medium",
        "food_safe": True,
        "description": "Универсальный инженерный пластик. Прочный, химстойкий, подходит для улицы.",
        "color_options": ["white", "black", "gray", "natural", "blue"],
    },
    {
        "name": "ABS",
        "category": "basic",
        "density_g_cm3": 1.04,
        "price_per_gram": 25.0,
        "flow_rate_mm3_s": 12.0,
        "max_temp_c": 100,
        "min_temp_c": -30,
        "strength": "high",
        "flexibility": "low",
        "chemical_resistance": "medium",
        "uv_resistance": "low",
        "food_safe": False,
        "description": "Термостойкий, ударопрочный. Требует закрытой камеры. Обрабатывается ацетоном.",
        "color_options": ["white", "black", "gray", "red", "blue"],
    },
    {
        "name": "PA (Nylon)",
        "category": "engineering",
        "density_g_cm3": 1.14,
        "price_per_gram": 50.0,
        "flow_rate_mm3_s": 10.0,
        "max_temp_c": 120,
        "min_temp_c": -40,
        "strength": "very_high",
        "flexibility": "medium",
        "chemical_resistance": "high",
        "uv_resistance": "medium",
        "food_safe": False,
        "description": "Инженерный пластик. Высокая прочность, износостойкость. Для шестерён, креплений.",
        "color_options": ["natural", "black"],
    },
    {
        "name": "PC (Поликарбонат)",
        "category": "engineering",
        "density_g_cm3": 1.20,
        "price_per_gram": 60.0,
        "flow_rate_mm3_s": 8.0,
        "max_temp_c": 140,
        "min_temp_c": -40,
        "strength": "very_high",
        "flexibility": "low",
        "chemical_resistance": "high",
        "uv_resistance": "high",
        "food_safe": False,
        "description": "Максимальная термостойкость и прочность. Для корпусов, работающих при высоких температурах.",
        "color_options": ["natural", "black"],
    },
    {
        "name": "TPU",
        "category": "engineering",
        "density_g_cm3": 1.21,
        "price_per_gram": 40.0,
        "flow_rate_mm3_s": 6.0,
        "max_temp_c": 80,
        "min_temp_c": -30,
        "strength": "medium",
        "flexibility": "very_high",
        "chemical_resistance": "high",
        "uv_resistance": "medium",
        "food_safe": False,
        "description": "Эластичный пластик, аналог резины. Для прокладок, амортизаторов, гибких деталей.",
        "color_options": ["white", "black", "natural"],
    },
    {
        "name": "PA-CF (Нейлон + углеволокно)",
        "category": "composite",
        "density_g_cm3": 1.18,
        "price_per_gram": 75.0,
        "flow_rate_mm3_s": 8.0,
        "max_temp_c": 150,
        "min_temp_c": -40,
        "strength": "extreme",
        "flexibility": "low",
        "chemical_resistance": "very_high",
        "uv_resistance": "high",
        "food_safe": False,
        "description": "Композит с углеволокном. Максимальная жёсткость и прочность. Замена алюминия.",
        "color_options": ["black"],
    },
]