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Raw Material (Chemical Composition)
High Carbon Steel Wire Rod / JIS G3506
| Class Symbol | Chemical Composition% | ||||
|---|---|---|---|---|---|
| C | Si | Mn | P | S | |
| SWRH 42A | 0.39 to 0.46 | 0.15 to 0.35 | 0.30 to 0.60 | 0.040 max. | 0.030 max |
| SWRH 62A | 0.59 to 0.66 | 0.15 to 0.35 | 0.30 to 0.60 | 0.040 max. | 0.030 max |
| SWRH 67A | 0.64 to 0.71 | 0.15 to 0.35 | 0.30 to 0.60 | 0.030 max. | 0.030 max. |
| SWRH 72A | 0.69 to 0.76 | 0.15 to 0.35 | 0.30 to 0.60 | 0.030 max. | 0.030 max. |
| SWRH 82A | 0.79 to 0.86 | 0.15 to 0.35 | 0.30 to 0.60 | 0.030 max. | 0.030 max. |
his Japanese Industrial Standard specifies high carbon steel wire rods to be used for the manufacture of high carbon steel wire, oil tempered wire, high carbon steel wire for prestressed oncrete, galvanized steel wire strand, wire rope, etc.
However, the piano wire rods shall be excluded.
Piano Wire Rods / JIS G3502
| Class Symbol | Chemical Composition% | |||||
|---|---|---|---|---|---|---|
| C | Si | Mn | P | S | Cu | |
| SWRS 62A | 0.60 to 0.65 | 0.12 to 0.32 | 0.30 to 0.60 | 0.025 max. | 0.025 max. | 0.020 max. |
| SWRS 72A | 0.70 to 0.75 | 0.12 to 0.32 | 0.30 to 0.60 | 0.025 max. | 0.025 max. | 0.020 max. |
This Japanese Industrial Strandard specifies piano wire rods to be used for the manufacture of piano wire, oil tempered wire, steel wire for prestressed concrete, steel wire strand for prestressed concrete, wire rope, etc.
