20CrMnTiH Steel Overview
20CrMnTiH is a premium alloy case-hardening steel widely used for gears, shafts, and transmission components that require high wear resistance and surface hardness with a tough core. As a high-grade material in the special steel (alloy steel) category, 20CrMnTiH is known for its excellent hardenability, fatigue strength, and machinability after heat treatment.
Chemical Composition (Typical %):
Carbon (C): 0.17–0.23
Chromium (Cr): 0.90–1.20
Manganese (Mn): 0.80–1.10
Titanium (Ti): 0.04–0.10
Silicon (Si): ≤ 0.40
Phosphorus (P): ≤ 0.025
Sulfur (S): ≤ 0.025
Main Features:
Excellent carburizing performance for deep case hardening
Good toughness and core strength
Stable heat treatment response
High wear and fatigue resistance
Ideal for precision mechanical components
Typical Applications:
20CrMnTiH is commonly used in manufacturing:
Automotive transmission gears and shafts
Industrial gearboxes and reducers
Machine tool spindles
Aerospace and heavy-duty equipment parts
Precision machinery requiring high surface hardness
20CrMnTiH vs. 20CrMnTi:
The “H” in 20CrMnTiH indicates a controlled hydrogen content and improved purity level. Compared to regular 20CrMnTi, the 20CrMnTiH grade provides better mechanical stability, reduced internal defects, and higher reliability under impact and fatigue conditions.
Equivalent Grades:
ASTM/SAE: 8620 (approx.)
DIN: 20CrMnTi (Germany)
JIS: SCM420 (Japan)
Why Choose ChinaSpecSteel
As a professional 20CrMnTiH steel supplier and exporter, ChinaSpecSteel partners with Jiyuan Iron & Steel Group, one of China’s leading alloy steel manufacturers. We offer:
Reliable mill origin (Jiyuan Steel) with full traceability
Custom sizes and heat treatment services
Competitive export pricing for B2B buyers
Strict quality inspection with SGS / BV support
Global shipping and professional export packaging
Common Supply Forms:
Hot rolled or forged bars
Round, square, or flat steel
Pre-machined gear blanks
Custom-size billets for OEM applications
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