不锈钢的物理性能主要用以下几方面来表示：
- 热膨胀系数 因温度变化而引起物质量度元素的变化。膨胀系数是膨胀－温度曲线的斜率，瞬时膨胀系数是特定温度下的斜率，两个指定的温度之间的平均斜率是平均热膨胀系数。膨胀系数可以用体积或者是长度表示，通常是用长度表示。
- 密度 物质的密度是该物质单位体积的质量，单位是 kg/m3 或 1b/in3。
- 弹性模量 当施加力于单位长度棱住的两端能引起物体在长度上的单位变化时，单位面积上所需的力称为弹性模量。单位为 1b/in3 或 N/m3。
- 电阻率 在单位长度立方体材料的两对面之间测量的电阻，单位用 Ω·m，μΩ·cm 或（已废的）Ω/(circular mil.ft) 来表示。
- 磁导率 无量纲系数，表示物质易被磁化的程度，是磁感应强度与磁场强度之比。
- 熔化温度范围 确定合金开始凝固和凝固完了的温度。
- 比热 单位质量的物质温度改变 1 度所需要的热量。在英制和 CGs 制中二者比热的数值相同，因为热量的单位（Biu 或 cal）取决于单位质量的水升高 1 度听需的热量。国际单位制中比热的数值与英制或 CGS 制是不同的，因为能量的单位 (J) 是按不同的定义定的。比热的单位是 Btu(1b·0F) 及 J/(kg ·k)。
- 热导率 物质导热的速率的量度。在单位截面积物质上建立单位长度上的 1 度的温度梯度时，那么热导率定义为单位时间传导的热量，热导率的单位为 Btu/(h·ft·0F) 或 w/(m·K)。
- 热扩散率 是确定物质内部温度前迁速率的一种性能，是热导率对比热和密度乘积的比值，热扩散率单位以 Btu/(h·ft·0F) 或 w/(m·k) 表示。
不锈钢的化学成分：
| 类型 | 牌号 | 化学成分 % | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| C | Si | Mn | P | S | Ni | Cr | Mo | Cu | N | 其它 | ||
| 奥氏体型 | 1Cr17Mn6Ni5N | ≤ 0.15 | ≤ 1.00 | 5.50－7.50 | ≤ 0.060 | ≤ 0.030 | 3.50-5.50 | 16.00-18.00 | — | — | ≤ 0.25 | — |
| 1Cr18Mn8Ni5N | ≤ 0.15 | ≤ 1.00 | 7.50-10.00 | ≤ 0.060 | ≤ 0.030 | 4.00-6.00 | 17.00-19.00 | - | - | ≤ 0.25 | - | |
| 1Cr18Mn10Ni5Mo3N | ≤ 0.15 | ≤ 1.00 | 8.50-12.00 | ≤ 0.060 | ≤ 0.030 | 4.00-6.00 | 17.00-19.00 | 2.8-3.5 | — | 0.20-0.30 | — | |
| 1Cr17Ni7 | ≤ 0.15 | ≤ 1.00 | ≤ 2.00 | ≤ 0.065 | ≤ 0.030 | 6.00-8.00 | 16.00-18.00 | — | — | — | — | |
| 1Cr18Ni9 | ≤ 0.15 | ≤ 1.00 | ≤ 2.00 | ≤ 0.035 | ≤ 0.030 | 8.00-10.00 | 17.00-19.00 | — | — | — | — | |
| Y1Cr18Ni9 | ≤ 0.15 | ≤ 1.00 | ≤ 2.00 | ≤ 0.20 | ≤ 0.030 | 8.00-10.00 | 17.00-19.00 | 1) | — | — | — | |
| Y1Cr18Ni9Se | ≤ 0.15 | ≤ 1.00 | ≤ 2.00 | ≤ 0.20 | ≤ 0.030 | 8.00-10.00 | 17.00-19.00 | — | — | — | Se ≥ 0.15 | |
| 0Cr18Ni9 | ≤ 0.07 | ≤ 1.00 | ≤ 2.00 | ≤ 0.035 | ≤ 0.030 | 8.00-10.00 | 17.00-19.00 | — | — | — | — | |
| 00Cr19Ni10 | ≤ 0.030 | ≤ 1.00 | ≤ 2.00 | ≤ 0.035 | ≤ 0.030 | 8.00-10.00 | 18.00-20.00 | — | — | — | — | |
| 0Cr19Ni9N | ≤ 0.08 | ≤ 1.00 | ≤ 2.00 | ≤ 0.035 | ≤ 0.030 | 7.00-10.50 | 18.00-20.00 | — | — | 0.10-0.25 | — | |
| 0Cr18Ni10NbN | ≤ 0.08 | ≤ 1.00 | ≤ 2.00 | ≤ 0.035 | ≤ 0.030 | 7.50-10.50 | 18.00-20.00 | — | — | 0.15-0.30 | Nb≤ 0.15 | |
| 00Cr18Ni10N | ≤ 0.030 | ≤ 1.00 | ≤ 2.00 | ≤ 0.035 | ≤ 0.030 | 8.50-11.50 | 17.00-19.00 | — | — | 0.12-0.22 | — | |
| 1Cr18Ni12 | ≤ 0.12 | ≤ 1.00 | ≤ 2.00 | ≤ 0.035 | ≤ 0.030 | 10.50-13.00 | 17.00-19.00 | — | — | — | — | |
| 0Cr23Ni13 | ≤ 0.08 | ≤ 1.00 | ≤ 2.00 | ≤ 0.035 | ≤ 0.030 | 12.00-15.00 | 22.00-24.00 | — | — | — | — | |
| 0Cr25Ni20 | ≤ 0.08 | ≤ 1.00 | ≤ 2.00 | ≤ 0.035 | ≤ 0.030 | 19.00-22.00 | 24.00-26.00 | — | — | — | — | |
| 0Cr17Ni12Mo2 | ≤ 0.08 | ≤ 1.00 | ≤ 2.00 | ≤ 0.035 | ≤ 0.030 | 10.00-14.00 | 16.00-18.50 | 2.00-3.00 | — | — | — | |
| 1Cr18Ni12Mo2Ti6) | ≤ 0.12 | ≤ 1.00 | ≤ 2.00 | ≤ 0.035 | ≤ 0.030 | 11.00-14.00 | 16.00-19.00 | 1.80-2.50 | — | — | Ti5(C%-0.02)~0.08 | |
| 0Cr18Ni12Mo2Ti | ≤ 0.08 | ≤ 1.00 | ≤ 2.00 | ≤ 0.035 | ≤ 0.030 | 11.00-14.00 | 16.00-19.00 | 1.80-2.50 | — | — | Ti5*C%-0.70 | |
| 00Cr17Ni14Mo2 | ≤ 0.030 | ≤ 1.00 | ≤ 2.00 | ≤ 0.035 | ≤ 0.030 | 12.00-15.00 | 16.00-18.00 | 2.00-3.00 | — | — | — | |
| 0Cr17Ni12Mo2N | ≤ 0.08 | ≤ 1.00 | ≤ 2.00 | ≤ 0.035 | ≤ 0.030 | 10.00-14.00 | 16.00-18.00 | 2.00-3.00 | — | 0.10-0.22 | — | |
| 00Cr17Ni13Mo2N | ≤ 0.030 | ≤ 1.00 | ≤ 2.00 | ≤ 0.035 | ≤ 0.030 | 10.50-14.50 | 16.00-18.50 | 2.00-3.00 | — | 0.12-0.22 | — | |
| 0Cr18Ni12Mo2Cu2 | ≤ 0.08 | ≤ 1.00 | ≤ 2.00 | ≤ 0.035 | ≤ 0.030 | 10.00-14.50 | 17.00-19.00 | 1.20-2.75 | 1.00-2.50 | — | — | |
| 00Cr18Ni14Mo2Cu2 | ≤ 0.030 | ≤ 1.00 | ≤ 2.00 | ≤ 0.035 | ≤ 0.030 | 12.00-16.00 | 17.00-19.00 | 1.20-2.75 | 1.00-2.50 | — | — | |
| 0Cr19Ni13Mo3 | ≤ 0.12 | ≤ 1.00 | ≤ 2.00 | ≤ 0.035 | ≤ 0.030 | 11.00-15.00 | 18.00-20.00 | 3.00-4.00 | — | — | — | |
| 00Cr19Ni13Mo3 | ≤ 0.08 | ≤ 1.00 | ≤ 2.00 | ≤ 0.035 | ≤ 0.030 | 11.00-15.00 | 18.00-20.00 | 3.00-4.00 | — | — | — | |
| 1Cr18Ni12Mo3Ti6) | ≤ 0.12 | ≤ 1.00 | ≤ 2.00 | ≤ 0.035 | ≤ 0.030 | 11.00-14.00 | 16.00-19.00 | 2.50-3.50 | — | — | Ti5(C%-0.02)~0.08 | |
| 0Cr18Ni12Mo3Ti | ≤ 0.08 | ≤ 1.00 | ≤ 2.00 | ≤ 0.035 | ≤ 0.030 | 11.00-14.00 | 16.00-19.00 | 2.50-3.50 | — | — | Ti5*C%-0.70 | |
| 0Cr18Ni16Mo5 | ≤ 0.040 | ≤ 1.00 | ≤ 2.00 | ≤ 0.035 | ≤ 0.030 | 15.00-17.00 | 16.00-19.00 | 4.00-6.00 | — | — | — | |
| 1Cr18Ni9Ti6) | ≤ 0.12 | ≤ 1.00 | ≤ 2.00 | ≤ 0.035 | ≤ 0.030 | 8.00-11.00 | 17.00-19.00 | — | — | — | Ti5(C%-0.02)~0.08 | |
| 0Cr18Ni10Ti | ≤ 0.08 | ≤ 1.00 | ≤ 2.00 | ≤ 0.035 | ≤ 0.030 | 9.00-12.00 | 17.00-19.00 | — | — | — | Ti ≥ 5*C% | |
| 0Cr18Ni11Nb | ≤ 0.08 | ≤ 1.00 | ≤ 2.00 | ≤ 0.035 | ≤ 0.030 | 9.00-13.00 | 17.00-19.00 | — | — | — | Nb ≥ 10*C% | |
| 0Cr18Ni9Cu3 | ≤ 0.08 | ≤ 1.00 | ≤ 2.00 | ≤ 0.035 | ≤ 0.030 | 8.50-10.50 | 17.00-19.00 | — | 3.00-4.00 | — | — | |
| 0Cr18Ni13Si4 | ≤ 0.08 | 3.00-5.00 | ≤ 2.00 | ≤ 0.035 | ≤ 0.030 | 11.50-15.00 | 15.00-20.00 | — | — | — | 2) | |
| 奥氏体、铁素体型 | 0Cr26Ni5Mo2 | ≤ 0.08 | ≤ 1.00 | ≤ 1.50 | ≤ 0.035 | ≤ 0.030 | 3.00-6.00 | 23.00-28.00 | 1.00-3.00 | — | — | 2) |
| 1Cr18Ni11Si4AlTi | 0.10-0.18 | 3.40-4.00 | ≤ 0.80 | ≤ 0.035 | ≤ 0.030 | 10-12.0 | 17.50-19.50 | — | — | — | Al 0.10-0.30; Ti 0.40-0.70 | |
| 00Cr18Ni5MoSi2 | ≤ 0.030 | 1.30-2.00 | 1.00-2.00 | ≤ 0.035 | ≤ 0.030 | 4.50-5.50 | 18.00-19.50 | 2.50-3.00 | — | — | — | |
| 铁素体型 | 0Cr13Al | ≤ 0.08 | ≤ 1.00 | ≤ 1.00 | ≤ 0.035 | ≤ 0.030 | 3) | 11.50-14.50 | — | — | — | Al 0.10-0.30 |
| 00Cr12 | ≤ 0.030 | ≤ 1.00 | ≤ 1.00 | ≤ 0.035 | ≤ 0.030 | 3) | 11.00-13.00 | — | — | — | — | |
| 1Cr17 | ≤ 0.12 | ≤ 0.75 | ≤ 1.25 | ≤ 0.035 | ≤ 0.030 | 3) | 16.00-18.00 | — | — | — | — | |
| Y1Cr17 | ≤ 0.12 | ≤ 1.00 | ≤ 1.00 | ≤ 0.035 | ≥ 0.15 | 3) | 16.00-18.00 | 1) | — | — | — | |
| 1Cr17Mo | ≤ 0.12 | ≤ 1.00 | ≤ 1.00 | ≤ 0.035 | ≤ 0.030 | 3) | 16.00-18.00 | 0.75-1.25 | — | — | — | |
| 00Cr30Mo25) | ≤ 0.010 | ≤ 0.40 | ≤ 0.40 | ≤ 0.035 | ≤ 0.030 | — | 28.50-32.00 | 1.50-2.50 | — | ≤ 0.015 | — | |
| 00Cr27Mo25 | ≤ 0.010 | ≤ 0.40 | ≤ 0.40 | ≤ 0.035 | ≤ 0.030 | — | 25.00-27.50 | 0.75-1.50 | — | ≤ 0.015 | — | |
| 马氏体型 | 1Cr12 | ≤ 0.15 | ≤ 0.50 | ≤ 1.00 | ≤ 0.035 | ≤ 0.030 | 3) | 11.50-13.00 | — | — | — | — |
| 1Cr13 | ≤ 0.15 | ≤ 1.00 | ≤ 1.00 | ≤ 0.035 | ≤ 0.030 | 3) | 11.50-13.50 | — | — | — | — | |
| 0Cr13 | ≤ 0.08 | ≤ 1.00 | ≤ 1.00 | ≤ 0.035 | ≤ 0.030 | 3) | 11.50-13.50 | — | — | — | — | |
| Y1Cr13 | ≤ 0.15 | ≤ 1.00 | ≤ 1.25 | ≤ 0.035 | ≥ 0.15 | 3) | 12.00-14.00 | 1) | — | — | — | |
| 1Cr13Mo | ≤ 0.08-0.18 | ≤ 0.60 | ≤ 1.00 | ≤ 0.035 | ≤ 0.030 | 3) | 11.50-14.00 | 0.30-0.60 | — | — | — | |
| 2Cr13 | 0.16-0.25 | ≤ 1.00 | ≤ 1.00 | ≤ 0.035 | ≤ 0.030 | 3) | 12.00-14.00 | — | — | — | — | |
| 3Cr13 | 0.26-0.35 | ≤ 1.00 | ≤ 1.00 | ≤ 0.035 | ≤ 0.030 | 3) | 12.00-14.00 | — | — | — | — | |
| Y3Cr13 | 0.26-0.40 | ≤ 1.00 | ≤ 1.25 | ≤ 0.035 | ≥ 0.15 | 3) | 12.00-14.00 | 1) | — | — | — | |
| 3Cr13Mo | 0.28-0.35 | ≤ 0.80 | ≤ 1.00 | ≤ 0.035 | ≤ 0.030 | 3) | 12.00-14.00 | 0.50-1.00 | — | — | — | |
| 4Cr13 | 0.36-0.45 | ≤ 0.60 | ≤ 0.80 | ≤ 0.035 | ≤ 0.030 | 3) | 12.00-14.00 | — | — | — | — | |
| 1Cr17Ni2 | 0.11-0.17 | ≤ 0.80 | ≤ 0.80 | ≤ 0.035 | ≤ 0.030 | 1.50-2.50 | 16.00-18.00 | — | — | — | — | |
| 7Cr17 | 0.60-0.75 | ≤ 1.00 | ≤ 1.00 | ≤ 0.035 | ≤ 0.030 | 3) | 16.00-18.00 | 4) | — | — | — | |
| 8Cr17 | 0.75-0.95 | ≤ 1.00 | ≤ 1.00 | ≤ 0.035 | ≤ 0.030 | 3) | 16.00-18.00 | 4) | — | — | — | |
| 9Cr18 | 0.90-1.00 | ≤ 0.80 | ≤ 0.80 | ≤ 0.035 | ≤ 0.030 | 3) | 17.00-19.00 | 4) | — | — | — | |
| 11Cr17 | 0.95-1.20 | ≤ 1.00 | ≤ 1.00 | ≤ 0.035 | ≤ 0.030 | 3) | 16.00-18.00 | 4) | — | — | — | |
| Y11Cr17 | 0.95-1.20 | ≤ 1.00 | ≤ 1.25 | ≤ 0.035 | ≥ 0.15 | 3) | 16.00-18.00 | 4) | — | — | — | |
| 9Cr18Mo | 0.95-1.10 | ≤ 0.80 | ≤ 0.80 | ≤ 0.035 | ≤ 0.030 | 3) | 16.00-18.00 | 0.40-0.70 | — | — | — | |
| 9Cr18MoV | 0.85-0.95 | ≤ 0.80 | ≤ 0.80 | ≤ 0.035 | ≤ 0.030 | 3) | 17.00-19.00 | 1.00-1.30 | — | — | V0.07-0.12 | |
| 沉淀硬化型 | 0Cr17Ni4Cu4Nb | ≤ 0.07 | ≤ 1.00 | ≤ 1.00 | ≤ 0.035 | ≤ 0.030 | 6.50-7.50 | 15.50-17.50 | — | 3.00-5.00 | — | Nb 0.15-0.45 |
| 0Cr17Ni7Al | ≤ 0.09 | ≤ 1.00 | ≤ 1.00 | ≤ 0.035 | ≤ 0.030 | 6.50-7.50 | 16.00-18.00 | — | ≤ 0.50 | — | Al 0.75-1.50 | |
| 0Cr15Ni7Mo2Al | ≤ 0.09 | ≤ 1.00 | ≤ 1.00 | ≤ 0.035 | ≤ 0.030 | 6.50-7.50 | 14.00-16.00 | 2.00-3.00 | — | — | Al 0.75-1.50 | |
