Chrome Plated Bar – Technical Specifications & Material Properties
Product Overview
The chrome plated bar (hard chrome plated rod) is a precision-engineered component widely used in hydraulic and pneumatic systems. It offers high surface hardness, excellent corrosion resistance, and superior wear performance, making it ideal for demanding industrial applications.
| Material | C | Mn | Si | S | P | V | Cr |
|---|---|---|---|---|---|---|---|
| CK45 | 0.42–0.50 | 0.50–0.80 | ≤0.04 | ≤0.035 | 0.035 | — | ≤0.25 |
| ST52 | ≤0.22 | ≤1.60 | ≤0.55 | ≤0.04 | ≤0.04 | — | — |
| 20MnV6 | 0.16–0.22 | 1.30–1.70 | 0.10–0.50 | ≤0.035 | ≤0.035 | 0.10–0.20 | ≤0.30 |
| 42CrMo4 | 0.38–0.45 | 0.60–0.90 | 0.15–0.40 | ≤0.035 | ≤0.035 | 0.07–0.12 | 0.90–1.20 |
| 40Cr | 0.37–0.45 | 0.50–0.80 | 0.17–0.37 | ≤0.035 | ≤0.035 | — | 0.80–1.10 |
| Material | Tensile Strength (N/mm²) | Yield Strength (N/mm²) | Elongation (%) | Impact | Condition |
|---|---|---|---|---|---|
| CK45 | 610 | 355 | 15 | >41J | Normalized |
| CK45 (Q&T) | 800 | 630 | 20 | >41J | Quenched & Tempered |
| ST52 | 500 | 355 | 22 | — | Normalized |
| 20MnV6 | 750 | 590 | 12 | >40J | Normalized |
| 42CrMo4 | 980 | 850 | 14 | >47J | Quenched & Tempered |
| 40Cr | 1000 | 800 | 10 | — | Quenched & Tempered |
Precision ground & polished
Hard chrome plated
Optional: Induction hardened
Heat treatment: Quenched & Tempered (Q&T)
Standard thickness: 20 – 30 microns
Ra ≤ 0.2 μm (ultra-smooth finish)
Rt ≤ 2 μm
Diameter tolerance: ISO f7
Ovality: ≤ 50% of ISO f7 tolerance
Straightness: ≤ 0.2 mm/m
850 – 1150 HV (Vickers 100g)
No cracking or peeling after thermal shock
(Heated to 300°C and water cooled)
Standard: ISO 1456 / ISO 1458
Rating: ISO 4540 Grade 8–10
Salt spray test: ASTM B117 – 72 hours
Rating: ISO 4540 Grade 7–10
Anti-rust oil protection
Individual paper sleeve packing for each
Chrome Plated Bar – Technical Specifications & Material Properties
Product Overview
The chrome plated bar (hard chrome plated rod) is a precision-engineered component widely used in hydraulic and pneumatic systems. It offers high surface hardness, excellent corrosion resistance, and superior wear performance, making it ideal for demanding industrial applications.
| Material | C | Mn | Si | S | P | V | Cr |
|---|---|---|---|---|---|---|---|
| CK45 | 0.42–0.50 | 0.50–0.80 | ≤0.04 | ≤0.035 | 0.035 | — | ≤0.25 |
| ST52 | ≤0.22 | ≤1.60 | ≤0.55 | ≤0.04 | ≤0.04 | — | — |
| 20MnV6 | 0.16–0.22 | 1.30–1.70 | 0.10–0.50 | ≤0.035 | ≤0.035 | 0.10–0.20 | ≤0.30 |
| 42CrMo4 | 0.38–0.45 | 0.60–0.90 | 0.15–0.40 | ≤0.035 | ≤0.035 | 0.07–0.12 | 0.90–1.20 |
| 40Cr | 0.37–0.45 | 0.50–0.80 | 0.17–0.37 | ≤0.035 | ≤0.035 | — | 0.80–1.10 |
| Material | Tensile Strength (N/mm²) | Yield Strength (N/mm²) | Elongation (%) | Impact | Condition |
|---|---|---|---|---|---|
| CK45 | 610 | 355 | 15 | >41J | Normalized |
| CK45 (Q&T) | 800 | 630 | 20 | >41J | Quenched & Tempered |
| ST52 | 500 | 355 | 22 | — | Normalized |
| 20MnV6 | 750 | 590 | 12 | >40J | Normalized |
| 42CrMo4 | 980 | 850 | 14 | >47J | Quenched & Tempered |
| 40Cr | 1000 | 800 | 10 | — | Quenched & Tempered |
Precision ground & polished
Hard chrome plated
Optional: Induction hardened
Heat treatment: Quenched & Tempered (Q&T)
Standard thickness: 20 – 30 microns
Ra ≤ 0.2 μm (ultra-smooth finish)
Rt ≤ 2 μm
Diameter tolerance: ISO f7
Ovality: ≤ 50% of ISO f7 tolerance
Straightness: ≤ 0.2 mm/m
850 – 1150 HV (Vickers 100g)
No cracking or peeling after thermal shock
(Heated to 300°C and water cooled)
Standard: ISO 1456 / ISO 1458
Rating: ISO 4540 Grade 8–10
Salt spray test: ASTM B117 – 72 hours
Rating: ISO 4540 Grade 7–10
Anti-rust oil protection
Individual paper sleeve packing for each
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