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Titanium & Titanium Alloy for Medical Applications

Exploring the Features of Medical Implant Devices

Titanium has many useful features including low specific gravity, half that of nickel, excellent corrosion resistance and strength, high biocompatibility, and non-magnetic properties useful for MRI application. With these advantageous features, titanium is an optimum material for medical prosthetic devices. To accommodate the wide range of increasing needs, Daido Steel has established a manufacture-logistics streaming system from raw material procurement to sales and distribution which is available for multiple products and small-lot.

Applications

Classification		Parts Name	Material
Implant	Artificial hip joint	Stem, cup	Pure titanium round bar Titanium alloy round bar
	Artificial hip joint		Pure titanium round bar Titanium alloy round bar
	Fracture fixation	Plate, screw	Pure titanium round bar Titanium alloy round bar Titanium alloy wire rod
	Artificial heart	Housing, case	Pure titanium round bar
	Artificial heart valve	Frame	Titanium alloy round bar
Density	Artificial dental root		Titanium alloy round bar
	Jig	Handpiece	Pure titanium round bar
	Dentition fixation	Splint
Surgery	Cerebral aneurysm	Clip	Titanium alloy round bar
	Brace		Titanium alloy round bar
	Catheter guide wire		Ni-Ti alloy wire
	Fracture surgery	Bolts	Pure titanium wire rod
Body Sup.	Parts for artificial arms/hands/legs		Titanium investment-castings

Chemical composition

DAIDO BRAND	Typical corresponding standard	Chemical composition (wt.%)
DAIDO BRAND	Typical corresponding standard	N	C	H	Fe	O	Al	V	Y	Nb	Ta	Ti
DT1	JIS Class 1	≦0.03	≦0.08	≦0.013	≦0.20	≦0.15	-	-	-	-	-	Bal
	ASTMF67 Grade 1	≦0.03	≦0.08	≦0.015	≦0.20	≦0.18	-	-	-	-	-	Bal
	ISO 5832-2 Grade 1	≦0.03	≦0.08	≦0.0125	≦0.20	≦0.18	-	-	-	-	-	Bal
DT2	JIS Class 2	≦0.03	≦0.08	≦0.013	≦0.25	≦0.20	-	-	-	-	-	Bal
	ASTMF67 Grade 2	≦0.03	≦0.08	≦0.015	≦0.30	≦0.25	-	-	-	-	-	Bal
	ISO 5832-2 Grade 2	≦0.03	≦0.08	≦0.0125	≦0.30	≦0.25	-	-	-	-	-	Bal
DT3	JIS Class 3	≦0.05	≦0.08	≦0.013	≦0.30	≦0.30	-	-	-	-	-	Bal
	ASTMF67 Grade 3	≦0.05	≦0.08	≦0.015	≦0.30	≦0.35	-	-	-	-	-	Bal
	ISO 5832-2 Grade 3	≦0.05	≦0.08	≦0.0125	≦0.30	≦0.35	-	-	-	-	-	Bal
DT4	JIS Class 4	≦0.05	≦0.08	≦0.013	≦0.50	≦0.40	-	-	-	-	-	Bal
	ASTMF67 Grade 4	≦0.05	≦0.08	≦0.015	≦0.50	≦0.40	-	-	-	-	-	Bal
	ISO 5832-2 Grade 4	≦0.05	≦0.08	≦0.0125	≦0.50	≦0.40	-	-	-	-	-	Bal
DAT5E	JIS Class 60E	≦0.03	≦0.08	≦0.0125	≦0.25	≦0.13	5.50～ 6.50	3.50～ 4.50	-	-	-	Bal
	ASTM F136	≦0.05	≦0.08	≦0.012	≦0.25	≦0.13	5.5～ 6.50	3.5～ 4.5	-	-	-	Bal
	ISO 5832-3	≦0.05	≦0.08	≦0.015	≦0.3	≦0.2	5.5～ 6.75	3.5～ 4.5	-	-	-	Bal
DAT5	ASTM F1472	≦0.05	≦0.08	≦0.015	≦0.30	≦0.20	5.5～ 6.75	3.5～ 4.5	≦0.005	-	-	Bal
DAT67	ASTM F1295	≦0.05	≦0.08	≦0.009	≦0.25	≦0.20	5.50～ 6.50	-	-	6.50～ 7.50	≦0.50	Bal
DAT67	ISO 5832-11	≦0.05	≦0.08	≦0.009	≦0.25	≦0.20	5.5～ 6.5	-	-	6.5～ 7.5	≦0.50	Bal

※Other trace elements

Mechanical properties

DAIDO BRAND	Typical corresponding standard	Tensile strength (N/mm²)	0.2% Yield strength (N/mm²)	Elongation (%)	Reduction of area(%)	Hardness	Heat treatment (annealing)
DT1	JIS Class 1	270～410	≧165	≧27	-	≧100	○
	ASTMF67 Grade 1	≧240	≧170	≧24	≧30	-	○
	ISO 5832-2 Grade 1	≧240	≧170	≧24	≧30	-	○
DT2	JIS Class 2	340～510	≧215	≧23	-	≧110	○
	ASTMF67 Grade 2	≧345	≧275	≧20	≧30	-	○
	ISO 5832-2 Grade 2	≧345	≧275	≧20	≧30	-	○
DT3	JIS Class 3	480～620	≧345	≧18	-	≧150	○
	ASTMF67 Grade 3	≧450	≧380	≧18	≧30	-	○
	ISO 5832-2 Grade 3	≧450	≧380	≧18	≧30	-	○
DT4	JIS Class 4	550～750	≧485	≧15	-	≧180	○
	ASTMF67 Grade 4	≧550	≧483	≧15	≧25	-	○
	ISO 5832-2 Grade 4	≧550	≧483	≧15	≧25	-	○
DAT5E	JIS Class 60E	≧825	≧755	≧10	≧25	-	○
	ASTM F136	≧860	≧795	≧10	≧25	-	○
	ISO 5832-3	≧860	≧780	≧10	-	-	○
DAT5	ASTM F1472	≧895	≧825	≧10	≧15	-	○
DAT67	ASTM F1295	≧900	≧800	≧10	≧25	-	○
DAT67	ISO 5832-11	≧900	≧800	≧10	≧25	-	○