| FERRITE | Compound in low-carbon steel |
| EDDS | Very low-carbon steel, init. |
| BROWNCOAL | Low carbon form of low-grade fuel (5,4) |
| SNOB | Elitist hidden backwards in "carbon steel" |
| ECO | ___-tourism (sightseeing with a low carbon footprint, maybe) |
| GREENBLUE | Low-carbon suggestive of turquoise (5-4) |
| SHORTCRUST | Pastry showing low carbon decay (10) |
| SELECT | High-class carbon steel alloy (6) |
| WOKS | Concave cooking vessels often made of carbon steel |
| WOK | Carbon steel vessel, often |
| EASTERNBLOC | Countries once dominated fabrication of carbon steel (7,4) |
| BLOC | Carbon steel construction of iron curtain states (7,4) |
| EASTERN | Carbon steel construction of iron curtain states (7,4) |
| ENBLOC | To make carbon steel, change rates altogether (2,4) |
| MILDSTEEL | Low-carbon alloy is melted, forged and left (4,5) |
| ELECTS | What a US college does every four years, engineering carbon steel (6) |
| SODA | Informal word for fizzy water or pop; the top card of the pack in faro; or, a short word for a compound in baking/washing powder or in toothpaste (4) |
| CIRENCESTER | Warning heard about compound in place in Gloucestershire |
| ESOTERIC | Secret ring in compound in command (8) |
| CERTAINTY | Nitrate compound in carbon unknown? Sure thing! (9) |
