Material We Use

Material Quality

Material source is the key to quality. Tien-I is a member of China Steel Corporation (CSC), the leading steel company in Taiwan.
We also collaborate with other excellent international steel companies, including Nippon Steel Corporation, to provide special alloy steel for your various designs.

Heat Treatment

Treating materials with heat alters its stability and, in some cases, its chemical properties. Suitable heat treatment can strike the perfect balance between cost and longevity.

Tien-I performs three main types of heat treatment:
- Continuous Furnace
- Batch Furnace
- Vacuum Furnace

Eco-Friendly Plating

While treating surfaces with improves both durability and appearance, traditional plating methods have been associated with serious environmental hazards.

By choosing to work exclusively with qualified plating factories compliant with government environmental regulation and international ROHS requirements, we aim to supply quality products that do not harm the environment.

Material Components

Cr-Mo Steels
Standard			CHEMICAL COMPOSITION
JIS	ANSI	DIN	C	Si	Mn	P	S	Ni	Cr	Mo	V
SCM435	4130
SCM440	4140	42CrMo4	0.38-0.43	0.15-0.35	0.60-0.85	≦0.030	≦0.030	-	0.90-1.20	0.15-0.30	-

Carbon Steels
Standard			CHEMICAL COMPOSITION
JIS	ANSI	DIN	C	Si	Mn	P	S	Ni	Cr	tot	V
SWRCH8	1008		≦0.08	-	≦0.60	≦0.040	≦0.040	-	-	-	-
S15C	1015	CK15	0.13-0.18	0.15-0.35	0.30-0.60	≦0.030	≦0.035	-	-	-	-
S45C	1045	CK45	0.42-0.48	0.15-0.35	0.60-0.90	≦0.030	≦0.035	-	-	-	-

Alloy Tool Steels
Standard			CHEMICAL COMPOSITION
JIS	ANSI	DIN	C	Si	Mn	P	S	Ni	Cr	Mo	V
	S2 M		0.65-0.70	1.00-1.25	0.45-0.60	≦0.025	≦0.025	-	0.10-0.30	0.40-0.50	0.15-0.25

Free Cutting Steels
Standard			CHEMICAL COMPOSITION
JIS	ANSI	DIN	C	Si	Mn	P	S	Ni	Cr	Mo	Pb
SUM43	1144		0.40-0.48	-	1.35-1.65	≦0.040	0.24-0.33	-	-	-	-
S45CL	10L45		0.42-0.48	0.15-0.35	0.60-0.90	≦0.030	≦0.035	-	-	-	0.10-0.35

Medium-Carbon Alloy Steels
Standard			CHEMICAL COMPOSITION
JIS	CSC	DIN	C	Si	Mn	P	S	Ni	Cr	A1	V
	40ACR		0.40-0.44	≦0.10	0.60-0.90	≦0.030	≦0.030	-	0.20-0.40	≧0.010	-

CR-V
Standard			CHEMICAL COMPOSITION
JIS	ANSI	DIN	C	Si	Mn	P	S	Ni	Cr	Mo	V
	50BV30		0.27-0.33	≦0.10	0.70-1.00	≦0.030	≦0.035	-	0.30-0.50	＞0.0005	0.10-0.50

Ni-Cr-Mo Steels
Standard			CHEMICAL COMPOSITION
JIS	ANSI	DIN	C	Si	Mn	P	S	Ni	Cr	Mo	V
SNCM220	8620	21NiCrMo2	0.17-0.23	0.15-0.35	0.60-0.90	≦0.030	≦0.030	0.40-0.70	0.40-0.65	0.15-0.30	-
	8660+V		0.56-0.64	0.15-0.35	0.75-1.00	≦0.035	≦0.040	0.40-0.70	0.40-0.60	0.15-0.25	0.15-0.25

Spring Steels
Standard			CHEMICAL COMPOSITION
JIS	ANSI	DIN	C	Si	Mn	P	S	Ni	Cr	Mo	V
SUP10	6150	50CrV4	0.47-0.55	0.15-0.35	0.65-0.95	≦0.035	≦0.035	-	0.80-1.10	-	0.15-0.25

High C-Cr Steels (Bearing Steels)
Standard			CHEMICAL COMPOSITION
JIS	ANSI	DIN	C	Si	Mn	P	S	Ni	Cr	Mo	V
SUJ2	52100	100Cr6	0.95-1.10	0.15-0.35	≦0.50	≦0.025	≦0.025	-	1.30-1.60	-	-

FAQ

Check our FAQ to learn more information about Tien-i, how to purchase and how to customize your own product.

See FAQ