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| Heat Analysis Chemical Ranges | |||
| and Limits of Carbon Steel Bars | |||
| Chemical Ranges and Limits, Percent | |||
| Lowest | |||
| Element | Maximum of Specified Element | Range | Maximum |
| Carbona | | | 0.06 |
| to 0.12 incl. | | | |
| over 0.12/0.25 incl. | 0.05 | | |
| over 0.25/0.40 incl. | 0.06 | | |
| over 0.40/0.55 incl. | 0.07 | | |
| over 0.55/0.80 incl. | 0.1 | | |
| over 0.80 | 0.13 | | |
| Manganese | | | 0.35 |
| to 0.40 incl. | 0.15 | | |
| over 0.40/0.50 incl. | 0.2 | | |
| over 0.50/1.65 incl. | 0.3 | | |
| Phosphorus | to 0.40 incl. | | 0.040d |
| over 0.40/0.80 incl. | 0.03 | | |
| over 0.08/0.13 incl. | 0.05 | | |
| Sulfur | to 0.50 incl. | | 0.050d |
| over 0.050/0.09 incl. | 0.03 | | |
| over 0.09/0.15 incl. | 0.05 | | |
| over 0.15/0.23 incl. | 0.07 | | |
| over 0.23/0.50 incl. | 0.09 | | |
| Siliconb | | | 0.050d |
| to 0.10 incl. | 0.03 | | |
| over 0.10/0.15 incl. | 0.05 | | |
| over 0.15/0.20 incl. | 0.07 | | |
| over 0.23/0.50 incl. | 0.09 | | |
| Copper | when copper is required, 0.20 min is generally used | | |
| Leadc | when lead is required, a range of 0.15/0.35 is specified | | |
| Bismuthe | | | |
| Calciume | | | |
| Seleniume | | | |
| Tellunume | | | |
| a | The carbon ranges shown in the column headed Range apply when the specified maximum limit for manganese does not exceed 1/10 percent. When the maximum manganese limit exceeds 1/10 percent, add 0.01 to the carbon ranges shown above. |
| b | It is not common practice to produce a rephosphorized and resulfurized carbon steel to specified limits for silicon because of its adverse effect on machinability. |
| c | A cast or heat analysis is not determinable when lead is added to the ladle stream. |
| d | For steels produced in merchant quality, the phosphorus maximum is 0.04 percent and the sulfur maximum is 0.05 percent. |
| e | Element specification range as agreed upon between purchaser and supplier. |
