Direct Sales Custom455 Steel Rod/Bar for Arthroscopic Punch Forceps Medical Materials

• Customization: Available
• Type: Alloy Steel Bar
• Standard: AISI, ASTM, GB, JIS, DIN
• Model NO.: Custom455 Steel
• Technique: Cold Drawn
• Application: Structural Steel Bar, Tool Steel Bar, Die Steel Bar
• Surface Treatment: Polished
• Alloy: Non-alloy
• Special Use: Mold Steel, Free Cutting Steel, Cold Heading Steel
• Key Words: Custom455 Steel
• Thickness: 2mm - 100mm
• Outside Diameter: 4.0 - 1219mm
• Length: as Your Requirments
• Diameter Tolerance: H9, H11, H13, K9, K11, K13 etc
• Sample: Free-Sample
• Surface: Lack, Peeled, Polishing, Bright, Sand Blast, Hl
• MOQ: 100kgs
• Stock: in Stock
• Transport Package: Wooden Package
• Specification: Custom455 Steel
• Trademark: LORK
• Origin: China
• HS Code: 7219350000
• Production Capacity: 50000kg/Month

Product Description

Product Description

Introduction

Custom 455(XM16) Steel is a precipitation-hardened, martensitic stainless steel that offers exceptional hardness and mechanical strength. It is delivered in a machinable solution heat treated condition. Given its high mechanical strength to torsion torque, this alloy is particularly recommended for use in tools subjected to torque.

Composition
Chemical Composition (wt%) limits as specified in Custom 455 Steel Steel

Element	Min	Max
Carbon	--	0.05
Manganese	--	2.00
Silicon	--	0.50
Phosphorus	--	0.040
Sulfur	--	0.030
Chromium	11.00	12.50
Nickel	7.50	9.50
Molybdenum	--	0.50
Copper	1.50	2.50
Columbium+Tantalum	0.10	0.50

Grade Specification

 

Grade	UNS	DIN	EN	ASTM	AMS
Custom 455(XM16)	UNS S45500			ASTM A693 ASTM A564	AMS 5617 AMS 5578 AMS 5860

Physical Properties

The physical properties of stainless steel grade Custom 455 Steel are tabulated below.

Properties	Metric	Imperial
Density	7.76 g/cm^3	0.280 lb/in^3

Mechanical Properties
Mechanical property requirements for solution treated product (Condition A) as specified in Custom 455 Steel.

 

Condition	0.2% Yield Strength		Ultimate Tensile Strength		Notch Tensile Strength K(t)=10		% Elong. in 4D	% Reduction of Area	Rockwell C Hardness	Charpy V-Notch Impact Strength
	ksi	MPa	ksi	MPa	ksi	MPa				ft-lb	J
A	115	793	140	965	--	--	12	50	31	--	--
H 900	220	1516	230	1585	250	1723	10	45	48	8	11
H 1000	195	1344	205	1413	250	1723	12	45	45	12	16
H 1050	175	1206	190	1309	250	1723	14	50	40	25	34

Elevated Temperature
 

Test Temperature		0.2% Yield Strength		Ultimate Tensile Strength		% Elongation in 4D	% Reduction of Area	Room Temp. Rockwell C Hardness after test
°F	°C	ksi	MPa	ksi	MPa
Room		220	1517	230	1586	12	50	48
600	316	185	1276	195	1345	12	50	48
800	427	163	1124	175	1207	14	60	48
1000	538	110	758	130	896	18	70	48

 

Corrosion Resistance

Custome 455 stainless Steel resists staining in normal air atmospheres, and shows no corrosion in fresh water. Test in 5% salt spray at 95 °F(35 °C) and in 5% ferric chloride at room temperature have demonstrated good resistance to pitting and rusting. Laboratory test s in a variety of mild chemical environments have shown that the level of general corrosion resistance is superior to that of the 12% chromium steels (Type 430). In most tests there was no significant effect of aging temperature on corrosion resistance. Hydrogen embrittlement tests in 5% acetic acid saturated with sulfuric hydrogen at room temperature show the same degree of susceptibility as other high-strength martensitic stainless steels. All high-strength steels are subject to stress corrosion under certain stress conditions and in certain environments. Numerous severe tests have been conducted to evaluate the behavior of Custom 455 stainless Steel in different environments, and to determine the effect of aging temperature on resistance to stress -corrosion cracking. These tests include U-bend specimens, direct tension specimens, C-rings and precracked cantilever beam specimens. Environments have included marine atmospheres, 20% salt spray, and 3-1/2% sodium chloride solutions. All tests have shown that Custom 455 stainless Steel has inherently good resistance to stress-corrosion cracking, and that this resistance improves markedly as aging temperature is increased. For optimum corrosion resistance, surfaces must be free of scale and foreign particles and finished parts should be passivated.


Processing method

Welding
Custom 455 stainless Steel can be satisfactorily welded by the shielded fusion and resistance welding processes. Oxyacetylene welding is not recommended, since carbon pickup in the weld may occur. Preheating is not required to prevent cracking during the welding of this alloy. Normally, welding in the solution-annealed condition is satisfactory; however, where high welding stresses are anticipated, it may be advantageous to weld in the overaged (aged at 1150 °F) condition. If welded in the solution-annealed condition, the alloy can be directly aged to the desired strength level after welding. However, the optimum combination of strength, ductitlity and corrosion resistance is obtained by solution annealing the welded part before aging. If welded in the overaged condition, the part should be solution annealed before aging.

Hot working
Custome 455 stainless Steel is easily forged within the temperature range fo 1650/2300 °F. For optimum mechanical properties, material to be forged should be heated uniformly to 1900/2100 °F and soaked at heat; fnishing temperature should be within the range of 1500/1700 °F to obtain an optimum grain size and properties after heat treating. Cool forging in air to rom temperature and anneal.

Cold working
Cold working is readily performed despite the fact that Custom 455 stainless is martensitic in the annealed condition, and has a hardness of Rockwell C 30/35. Deep drawing or sketching operations will required intermediate anneals because the elongation tends to be localized. For other cold-forming operations such as cold drawing and cold rolling, the work-hardening rate in the annealed condition is extremely low allowing considearble cold working without intermediate annealing. Cold-heading and warm-heading operations are also easily performed. Cold working prior to aging results in even higher tensile and yield strengths in the hardened condition.

Spring Properties
Wire in the annealed or lightly drawn condition and annealed strip can be aged for 2 to 4 hours at 900°F (482°C) to achieve a tensile strength in excess of 250 ksi (1742 MPa). As such, Custom 455 stainless can be used in relatively large diameters and thicknesses and still have good spring characteristics. This greatly expands the range of sizes of corrosion-resistant springs available to designers.
Custom 455 stainless Steel can also be extensively cold worked prior to aging to achieve even higher levels of strength. Extensive cold working reduces the aging time required to reach maximum mechanical properties. Therefore, cold-drawn spring wire and cold-rolled strip in Condition C need only be aged for 1/2 hour at 850°F (454°C).

Machining
Custom 455 stainless Steel have been machined successfully using the same practices required for other high-strength alloys; i.e., rigid tool and work supports, slower speeds, positive cuts and adequate amounts of coolant. The machining characteristics of Custom 455 stainless are similar to those of the nickel maraging steeels. When using carbide tools , surface speed feet/minute can be increased between 2 to 3 times over the high speed suggestions. Feeds can be increased between 50 and 100%.


Applications

Custom 455 steel is mainly used in the medical field to manufacture orthopedic, spinal and dental surgical instruments.

Custom 455 steel is a high-strength, corrosion-resistant alloy material made of carefully proportioned elements such as chromium, nickel, molybdenum, and titanium, with excellent mechanical and physical properties. These characteristics give it significant advantages in the manufacture of medical devices. Specifically, the corrosion resistance and wear resistance of Custom 455 steel make it the preferred material for the manufacture of medical devices, such as internal fixation devices in orthopedic surgery, implants in spinal surgery, and instruments in dental surgery. These medical devices need to withstand the complex environment inside the human body and long-term use, so the material is required to have high strength and good biocompatibility. Custom 455 steel just meets these requirements, so it has been widely used in the medical field.
 

Surface Treatment

 

 

 

 

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