| 代号 | 含义（英） | 含义（中） |
| +A | soft annealed | 软化退火 |
| +AC | Annealed to achieve spheriodised carbides | 球化退火 |
| +AR | as rolled (without any special rolling and/or heat treatment conditions) | 轧制（无任何特殊轧制和/或热处理条件） |
| +AT | solution annealed | 固溶退火 |
| +C | cold work hardened | 冷作(拉)硬化 |
| +Cnnn | cold work hardened with a minimum tensile strength of nnn MPa | 冷加工硬化，最 低抗拉强度为nnn MPa |
| +CPnnn | cold work hardened with a minimum 0.2% proof strength of nnn MPa | 冷加工硬化，最 低屈服强度为nnn Mpa |
| +CR | cold rolled | 冷轧 |
| +DC | delivery condition at manufacturer's discretion | 交货条件由制造商决定 |
| +FP | treated to ferritic-pearlite structure and hardness range | 经过处理获得铁素体－球光体结构，且达到硬度范围 |
| +HC | hot rolled followed by cold hardening | 热轧后冷硬化 |
| +I | isothermically treated | 恒温退火 |
| +LC | skin passed (temper rolled or cold drawn) | 平整（回火轧制或冷拔） |
| +M | thermomechanically formed | 热机械成形 |
| +N | normalised or normalised formed | 正火或正火成形 |
| +NT | normalised and tempered | 正火和回火 |
| +P | precipitation hardened | 沉淀硬化 |
| +Q | quenched | 淬火 |
| +QA | air quenched | 空冷淬火 |
| +QO | oil quenched | 油淬 |
| +QT | quenched and tempered | 淬火和回火，调质 |
| +QW | water quenched | 水淬 |
| +RA | recrystallisation annealed | 再结晶退火 |
| +S | treated for cold shearing | 冷剪处理 |
| +SR | stress relieved | 应力消除 |
| +T | tempered | 回火 |
| +TH | treatment to hardness range | 处理到硬度范围 |
| +U | untreated | 未经处理的 |
| +WW | warm worked | 热作 |
| 核心作用：标识钢铁产品的加工或热处理状态，反映产品的工艺特性。 |
| 符号规则：符号与前面的名称用 “+” 分隔。 |
| 主要符号及含义： |
