UNS R30003 Introduction:
Executive standard GB/T 15018-1994 and YB/T 5253-1993)
Chemical composition: phosphorus p (0.010) lius (0.010) nickel ni (14~16) molybdenum mo (6.5~7.5) cobalt co (39) (~41)? Carbon c (0.03) Manganese mn (0.30~0.60) Silicon si (0.15~0.30)? Chromium cr (19~21)? Iron fe(remainder)
Physical properties: density 8.4g/cm3, ? Melting point: 1372-1405°C
Linear expansion coefficient (0 ~ 100 ℃) 14 × 10-6 / ℃, resistivity 92 μΩ - cm.
Recommended aging heat treatment system 450 ~ 550 ℃ heat preservation of 4h. Was called Co40NiCrMo.
I. Overview
The alloy Is a kind of elastic alloy: in the solid solution state have good plasticity, easy to process, by large strain rate cold working and aging treatment, obtain high mechanical properties and elastic properties. With high hardness, strength, elasticity ji limit, energy storage ratio, fatigue strength, know the elastic hysteresis and after-effects, non-magnetic, good wear resistance, shock resistance, excellent corrosion resistance, mainly used for the production of 400 ℃ below the work of ge kinds of instrumentation springs as well as other elastic components.
Two, metallurgical structure: the alloy is austenitic organization
Three, with the following characteristics:
For the cobalt-containing 40% of the elasticity of the alloy, the alloy's three characteristics: non-magnetic, corrosion-resistant, high elasticity?
Four, the scope of application application areas are:
Mainly used for 400 ℃ below the requirements of wear-resistant, corrosion-resistant, shock-resistant, non-magnetic, high-strength hang air with elastic components such as the tip of the axle, tensile wire, traveler, clockwork, springs and diaphragms
Also used in the production of the requirements of a high degree of corrosion resistance, non-magnetic special bearings, small shafts, ball, stamping molds and cutting edge tools.
Precision instrumentation in the tension wire, spinning wire, etc.
Fifth, the relevant technical standards
YB/T 5253-1993 "elastic components with alloy 3J21 technical conditions"
ASTM F1058
AMS5876D-R30003
Sixth, the performance
High strength
High hardness
High elasticity ji limit
High energy storage ratio
High fatigue strength
Small elastic hysteresis and aftereffects
Non-magnetic
Good abrasion resistance
Anti impact
Excellent corrosion resistance
Can be used in low and high temperature Working under low and high temperature, high temperature up to 400°C
VII, can provide the product form
Wire supply specifications: 0.10-6.0mm
Strip supply specifications: 0.05-2.0mm
Bar supply specifications: diameter 20-100mm
Cold rolled strip (thickness of 0.20 ~ 2.50mm), cold rolled strip (thickness of 0.20~2.50mm), cold rolled strip (thickness of 0.20~2.50mm), cold rolled strip (thickness of 0.20~2.50mm), cold rolled strip (thickness of 0.20 ~ 2.50mm) 2.50mm),
Group A: tensile strength σb1177-1471MPa, elongation δ≥5%,
Group B: σb1471-1765MPa, δ≥3%;
Cold-drawn wire rod (diameter 0.20-5.00mm),
Group A: σb1275-1569MPa,
Group A: σb1,275-1569MPa, δ≥3%. 1569MPa,
Group B: σb 1569～1863MPa;
Cold working + aging state:
Modulus of elasticity 196 ～216GPa,
Shear modulus 74～83GPa,
Above is the introduction of the material material about uns r30003, ( shyingzhan.cn) will be updated daily about the alloy class information, welcome to instruct the exchange.