{"L1_core": {"domain": "surface_treatment", "category": "anodizing", "entity_type": "process"}, "L2_process": {"classes": {"Class_1": "undyed_natural", "Class_2": "dyed_colored"}, "standards": ["MIL-A-8625F", "ISO 7599", "EN 12373"], "sealing_methods": ["hot_water", "dichromate", "nickel_acetate"], "types_MIL_A_8625": {"Type_I": {"use": "fatigue_critical", "process": "chromic_acid", "thickness_um": [0.5, 7.5]}, "Type_IB": {"process": "chromic_low_voltage", "thickness_um": [0.5, 7.5]}, "Type_II": {"use": "decorative", "process": "sulfuric_acid", "thickness_um": [5, 25]}, "Type_IIB": {"use": "dimensional_critical", "process": "sulfuric_thin", "thickness_um": [2.5, 7.5]}, "Type_III": {"use": "wear_abrasion", "process": "hardcoat", "thickness_um": [12, 100]}}, "dimensional_growth": "50pct_penetration_50pct_buildup", "hardcoat_properties": {"max_temp_C": 200, "hardness_HRC_equiv": [60, 70], "electrical_insulator": true, "friction_coefficient": [0.4, 0.6]}}, "L5_metadata": {"updated": "2026-01-02", "version": "2.0"}, "L3_relations": {"applies_to": ["aluminum", "aluminum_alloy"], "substrates": ["6061", "6063", "7075", "2024"], "related_processes": ["powder_coating", "painting", "chromating"]}}