74 Lame: Double-Edge Razor Blades

Table of Contents

• Introduction to 74 Lame
• 74 Blades production video
• Product Specifications
• Quality and Performance Parameters
• Manufacturing Process
• Technical Details and FAQs

Introduction to 74 Lame

74 blades are a common type of double-edge razor blade designed for manual shaving and beard trimming. Crafted from high-quality stainless steel, these blades are widely used in beauty, hairdressing, and medical fields. They are compatible with all standard double-edge safety razors and are known for providing a smooth and comfortable shaving experience.

74 Blades production video:

Product Specifications

• Dimensions: 62 × 10.2 × 0.1 mm
• Packaging:
• 5 blades per small box
• 5000 blades per large box

Brands:

XIRUI: Manufactured in China, made from stainless steel, competitively priced for bulk use by factories and organizations.

Additional Features:

• Constructed from premium stainless steel with platinum and tungsten coatings for enhanced smoothness and durability.
• Each blade dispenser includes a slot for safe disposal of used blades.
• A pack of 100 blades can last several years with regular use.
• Precision-ground during manufacturing for exceptional quality.
• Suitable for all brands of safety razors and replaceable-blade straight razors.

Quality and Performance Parameters

The quality of 74 blades is assessed through material composition, hardness, corrosion resistance, and sharpness. Below is a table summarizing the key parameters:

Material	Hardness (HV)	Salt Spray Test (12h)	Salt Spray Test (24h)	Sharpness (10-blade avg.)	Usage Scenarios
214 (4Cr13)	540-580	No rust	No rust	10.2N – 12.4N	Shaving, hair cutting, industrial cutting
216 (6Cr13)	590-620	No rust	Slight rust	10.5N – 11.4N	Shaving, beard trimming, industrial scraping
YBS	610-640	No rust	Slight rust	10.7N – 11.6N	Shaving, beard trimming, bread carving
New 6Cr13 (0.09mm)	620-680	No rust	Rust	10.9N – 12.8N	Shaving, industrial use
Sandvik	620-680	No rust	Slight rust	9.3N – 10.3N	Shaving, precision cutting
American Blades	610-640	No rust	Slight rust	8N – 20N	General shaving and cutting
6Cr13 (0.13mm)	598-612	No rust	No rust	N/A	Industrial cutting, grafting

• Salt Spray Test: Conducted with a 5% saline solution (9.5 kg distilled water + 500 g sodium chloride), pH 6.5-7.2, at 35°C for 12 and 24 hours. Rust area ≤5% is acceptable.
• Sharpness Test: Measured using a blade sharpness tester, with lower Newton (N) values indicating sharper blades.

Manufacturing Process

The production of 74 blades involves five key steps:

• Stamping: Shaping the blade from stainless steel.
• Heat Treatment: Hardening the blade through quenching and tempering.
• Grinding: Precision grinding for sharpness, including rough, fine, and precision stages.
• Chrome Plating: Applied to enhance durability and corrosion resistance (not used for carbon steel blades).
• Packaging: Blades are packaged for distribution.

Comparison: Self-Made 74 Lame (216) vs. Swedish 74 Lame

Aspect	Self-Made 74 Lame (216)	Swedish 74 Lame	Conclusion
Grinding Process	Clear rough, fine, and precision grinding marks; smooth edges	Similar grinding marks; smooth edges	Both ensure comfortable use with no snagging
Blade Angles	Rough: 6°, Fine: 10°, Precision: 12°	Rough: 6°, Fine: 10°, Precision: 12.5°	Optimal skin contact at 24-26°, precision angle enhances comfort
Sharpness Durability	11.8N to 9.7N over 11 cuts	10.1N to 8.9N over 10 cuts	Self-made blades offer better stability and longevity
Hardness	HRC 55.5	HRC 56.3	Both exhibit excellent material properties
Chrome Plating	Uniform, bright, no gaps	Uniform, bright, no gaps	Self-made blades excel in edge stability and rust resistance

74 Blades Wholesale:

Double Edge Razor Blades | 74 Lame

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Top rated safety razor blades with coating strip

74 Blades FAQ

What is the purpose of cryogenic treatment for 74 blades?

Cryogenic treatment reduces residual austenite, an unstable structure at room temperature that can cause dimensional changes. This enhances hardness, strength, and wear resistance.

What is the role of tempering in blade production?

Tempering relieves internal stresses from heat treatment and increases blade toughness.

How does heat treatment affect blade hardness?

• Before quenching: HV 280-330
• After quenching: HV 700-780

How is the blade angle determined?

The blade is designed to glide over the skin at a 30-degree angle for optimal shaving, corresponding to a precision grinding angle of 12-13 degrees.

What are the benefits of blade coatings?

Coatings increase hardness, durability, and corrosion resistance while reducing friction for a smoother shave. Coated blades maintain sharpness longer than uncoated ones.

How do coated and uncoated blades differ in sharpness?

• Uncoated blades lose sharpness quickly and are less durable.
• Coated blades retain sharpness for up to 100 uses without significant decline.
• Why do some blades show oil stains after rust prevention treatment?
• Oil stains may result from poor-quality anti-rust oil or prolonged storage.

What is the difference between blades with and without anti-rust oil?

• Without anti-rust oil: Rust appears within 3-5 days.
• With anti-rust oil: Blades resist rust for extended periods.