How to Choose a Chrome Plating Vendor in India
Picking a hard chrome plating vendor is not a decision to make on price alone. A substandard chrome coat does not just look wrong — it can cause component failure, hydraulic leakage, or an extrusion line sitting idle while a replacement part is sourced.
The cost of rework far exceeds any savings made on a cheaper plating quote.
This guide is for procurement managers, plant engineers, and factory owners evaluating chrome plating vendors in India. It walks through the eight things worth checking before you commit a batch of components to anyone's tank, and closes with a single checklist you can use in a vendor meeting.
1. Verify Years of Experience
Chrome plating is as much craft as it is chemistry. The behaviour of a chromic acid bath shifts with temperature, contaminant load, additive depletion, and electrical parameters. An experienced plater reads these variables intuitively, before they turn into a bad batch.
What to ask:
- How many years has the vendor been operating an electroplating facility?
- Have they worked with components similar to yours?
- Can they provide references from clients in your industry?
A vendor with 10 or more years of experience is a safer choice. India Development Company has been operating continuously since 1992.
2. Evaluate Rectifier Capacity and Equipment Quality
The rectifier is the power source of the electroplating line. Its capacity determines how much current can be delivered to the bath, which in turn affects plating speed, uniformity, and the ability to handle large or complex components.
What to look for:
- Rectifier capacity of at least 1000 A for general industrial work
- 3000 to 5000 A capacity for high-volume or large-component plating
- Regular maintenance and calibration records for all electrical equipment
IDC operates a 4000-ampere rectifier, enabling high-volume production runs with consistent plating quality across large batches.
3. Confirm Hardness Specifications and Measurement
The defining property of hard chrome plating is its hardness, typically targeted at 55 to 70 RC depending on the application. For most industrial components, a hardness of 55 to 60 RC is the industry standard.
A reputable vendor should:
- Specify the hardness range they achieve as a standard output
- Measure and document hardness using a calibrated Rockwell hardness tester
- Be willing to provide test certificates or inspection records
A vendor who cannot specify the hardness of their chrome coat, or who has no measurement equipment on site, is not operating a professional facility.
4. Ask About Plating Thickness Range and Control
Chrome plating thickness is specified in micrometres (µm), and the right thickness depends entirely on your application:
| Application | Typical thickness |
|---|---|
| New coat, fine-tolerance parts | 5 to 50 µm |
| General industrial components | 50 to 150 µm |
| Heavy repair coat | 150 to 500 µm |
A professional vendor should be able to plate to your specified thickness and verify it using appropriate measurement tools. IDC's standard thickness range is 5 to 500 µm, covering the full spectrum.
5. Understand Their Plating Technique
Not all electroplating processes are the same. For hard chrome plating, the Low Voltage High Ampere technique is widely regarded as producing superior coating quality, with better adhesion, more uniform deposition, and optimal hardness development.
Ask your vendor:
- What voltage and current density do they operate at?
- Do they use a controlled, documented process, or is it operator-dependent?
- How do they manage bath chemistry?
IDC operates at 5 to 12 V using the Low Voltage High Ampere method — a deliberate choice for quality and consistency, not an accident of legacy equipment.
6. Check Turnaround Time and Batch Capacity
A chrome plating vendor who takes six weeks to return a critical piston rod creates a bottleneck, regardless of how good the coating is once it arrives.
Questions to ask:
- What is the standard turnaround time for components of your size and type?
- Can they handle your volume, both current and anticipated future requirements?
- Do they have capacity to take urgent or priority jobs?
7. Assess Safety and Regulatory Compliance
Electroplating facilities handle hazardous chemicals. A vendor who does not run a safe facility is a liability risk sitting inside your supply chain.
Safety indicators to look for:
- Proper personal protective equipment for all workers: acid-proof clothing, gloves, boots, helmets
- Adequate ventilation and fume extraction in the plating area
- Chemical storage and disposal practices that meet regulatory standards
At IDC, all workers are equipped with full PPE, and chemical solutions are maintained and disposed of in compliance with applicable regulations.
8. Evaluate Communication and Responsiveness
During your evaluation, pay attention to:
- How quickly they respond to inquiries
- Whether they can discuss technical specifications clearly, not just in sales language
- Whether they proactively flag issues with components brought in for repair
The Vendor Evaluation Checklist
| Criterion | What to verify |
|---|---|
| Experience | 10 or more years; references in your industry |
| Rectifier capacity | 1000 A minimum; 3000 to 5000 A for volume work |
| Hardness specification | 55 to 60 RC standard; measured and documented |
| Thickness range | 5 to 500 µm; verified with measurement tools |
| Plating technique | Low Voltage High Ampere preferred |
| Turnaround time | Consistent with your production schedule |
| Safety compliance | PPE, ventilation, chemical management |
| Communication | Responsive, technically competent |
India Development Company meets every criterion on this checklist, backed by 30 or more years of operation, 80 or more satisfied industrial clients, and a 4000 A rectifier facility in Kolkata. Contact us if you are evaluating chrome plating vendors.