Black Precision Granite Surface Plate with 70-80Hs Hardness and 254MPa Compressive Strength for Industrial Measurement

Price Negotiable

Price: Negotiable

MOQ: 5

Delivery Time: 10 work days

Brand: Willing

Product Description

Product Overview

Black Precision Granite Surface Plate manufactured from premium "Jinan Qing" natural granite material, featuring exceptional strength, hardness, and dimensional stability for industrial measurement applications.

Key Features & Benefits

High-quality natural granite construction with mechanical processing and manual polishing
Superior black gloss finish with precise construction and outstanding dimensional stability
Exceptional strength and hardness with Shore Hardness rating of >70-80Hs
Rust-resistant, acid and alkali-proof, non-magnetic properties
Excellent abrasion resistance and thermal stability at normal and high temperatures
Mineral composition includes pyroxene, anorthose, olivine, black mica, and magnetite
Maintains high precision under heavy-duty industrial conditions

Applications

Ideal for lineation, measurement, and inspection tasks in industrial production and laboratory environments.

Technical Specifications

Material Properties

Specific Gravity: 3.30 g/cm³ (2970-3070 kg/m³)
Shore Hardness: >70-80Hs
Tensile Strength: 211 Kg/cm²
Compressive Strength: 254-254 MPa
Linear Expansion Coefficient: 4.61×10⁻⁶/℃
Elastic Modulus: 30-50 GPa
Water Absorptivity: ≤0.13%
Flexible Grinding Capacity: 1.27-1.47 N/mm²

Available Sizes & Grades

Specification (MM)	Weight (KG)	00 Grade (μm)	0 Grade (μm)
300×300×50	19	3	6
400×300×70	25	3	6
400×400×70	48	3.5	6.5
630×400×100	76	3.5	7
630×630×100	155	4	8
800×500×130	156	4	8
1000×630×130	284	4.5	9
1000×750×150	338	5	9
1000×1000×150	450	5	10
1600×1000×200	963	6	12
2000×1000×200	1200	6.5	13
1600×1600×300	2312	6.5	13
2000×1600×300	2890	7	14
2500×1600×300	3612	8	16
3000×2000×500	9030	9	18
4000×2000×500	12040	11	22
6000×2000×700	25284	15	30