Tang Heng Dao

SOURCE SPECIFICATION EXTRACT

Documented details

Specifications (approx.) Sword only weight:  approx. 860 g (1 lb. 15 oz) Blade Length: 70.5 cm (27.75") Handle Length: 21.5 cm (8.46") Total Length: 93 cm (36.6") Length of upper edge at tip 10.2 cm (4") POB from hand guard  11 cm (4.33") Gradual tapering Width at hand guard: 3 cm (1.1")   Width at 10.2 cm from tip: 2.33 cm (0.92") Width at 4 cm from tip: 2.14 cm (0.84") Thickness at hand guard: 7.41 mm  Thickness at 10.2 cm from tip: 4.68 mm Thickness at 4 cm the tip: 4 mm  Blade cross section profile: triangular wedge shape Blade length wide profile:  straight blade, pointed tip with upper edge Warrior Grade GB 60Si2MnA High Carbon Manganese Spring Steel  (Compare to AISI/SAE 5160 spring steel)  Element %       60Si2MnA    AISI/SAE 5160    Carbon            0.56-0.64      0.56-0.61 Silicon              1.60-2.00       0.15-0.35 Manganese     0.60-0.90      0.75-1.00 Phosphorus     <=0.030        <=0.035 Sulfur               <=0.030 &nb