### 630 Stainless Steel Flat Bar (17-4PH): Technical Specifications and Applications

The 630 Stainless Steel Flat Bar, also known as 17-4PH, is one of the most versatile high-strength stainless steel flat bar products available. As a precipitation-hardened grade within the 600 series Martensitic Precipitation Hardening Alloys, this material combines exceptional strength with superior durability. Manufactured to ASTM A564 specifications, these flat bars deliver outstanding performance across demanding applications.

#### Key Features

- **High tensile strength**: 900-1000 MPa in H1150D condition

- **Excellent elongation**: Typically +20%

- **Superior corrosion resistance**

- **Enhanced heat treatment capability**

- **Precision ground finish available**

#### Material Properties

- Combines martensitic strength with austenitic corrosion resistance

- Achieves high strength through precipitation hardening

- Features finely dispersed carbides in the material matrix

- Available in H1150D condition for optimal performance

#### Primary Applications

- Oil and gas industry equipment

- Aerospace components

- Precision engineering parts

- High-stress structural applications

- Alternative to Grade 431 in specific applications

The 630 stainless steel flat bar undergoes specialized heat treatment processes that enhance its mechanical properties while maintaining excellent corrosion resistance. This makes it particularly suitable for applications requiring both strength and durability in challenging environments.

#### Technical Specifications Table

| Dimension (mm) | Length (mm) | Tolerance (H) | Surface Finish            |

|----------------|-------------|---------------|---------------------------|

| 10 x 3         | 3000        | H8            | Hot rolled & pickled      |

| 15 x 5         | 3000        | H9            | Sandblasted               |

| 20 x 6         | 3000        | H10           | Cold drawn                |

| 25 x 8         | 3000        | H11           | Polished                  |

| 30 x 10        | 3000        | H12           | Hairline finish           |

| 40 x 12        | 3000        | H13           | Precision ground finish   |

#### Contact Us

For detailed specifications and custom solutions tailored to your needs, please contact our technical team today. We are here to provide you with the best solution for your 630 stainless steel flat bar requirements.

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