src/app/materials.py

"""Material preset database with real engineering alloy properties.

All values from ASM International or manufacturer datasheets.
Properties are at room temperature (20-25C) unless noted.
"""

MATERIAL_PRESETS: dict[str, dict[str, float]] = {
    "ASTM A36 Steel": {
        "elastic_modulus": 200e9,
        "poisson_ratio": 0.26,
        "yield_strength": 250e6,
        "density": 7850.0,
    },
    "AISI 304 Stainless Steel": {
        "elastic_modulus": 193e9,
        "poisson_ratio": 0.29,
        "yield_strength": 215e6,
        "density": 8000.0,
    },
    "AISI 316L Stainless Steel": {
        "elastic_modulus": 193e9,
        "poisson_ratio": 0.30,
        "yield_strength": 170e6,
        "density": 7990.0,
    },
    "Aluminum 6061-T6": {
        "elastic_modulus": 68.9e9,
        "poisson_ratio": 0.33,
        "yield_strength": 276e6,
        "density": 2700.0,
    },
    "Aluminum 7075-T6": {
        "elastic_modulus": 71.7e9,
        "poisson_ratio": 0.33,
        "yield_strength": 503e6,
        "density": 2810.0,
    },
    "Ti-6Al-4V (Grade 5)": {
        "elastic_modulus": 113.8e9,
        "poisson_ratio": 0.342,
        "yield_strength": 880e6,
        "density": 4430.0,
    },
    "Copper C11000": {
        "elastic_modulus": 115e9,
        "poisson_ratio": 0.34,
        "yield_strength": 69e6,
        "density": 8940.0,
    },
    "Inconel 718": {
        "elastic_modulus": 200e9,
        "poisson_ratio": 0.30,
        "yield_strength": 1034e6,
        "density": 8190.0,
    },
    "Custom": {
        "elastic_modulus": 200e9,
        "poisson_ratio": 0.30,
        "yield_strength": 250e6,
        "density": 7850.0,
    },
}

MATERIAL_NAMES = list(MATERIAL_PRESETS.keys())