{"id":3876,"date":"2024-03-18T06:10:10","date_gmt":"2024-03-18T06:10:10","guid":{"rendered":"https:\/\/3dp.45612300.xyz\/product\/best-in939-powder-for-3d-printing-in-2023\/"},"modified":"2024-03-18T06:10:10","modified_gmt":"2024-03-18T06:10:10","slug":"best-in939-powder-for-3d-printing-in-2023","status":"publish","type":"product","link":"https:\/\/3dpmetal.com\/ru\/product\/best-in939-powder-for-3d-printing-in-2023\/","title":{"rendered":"Best IN939 Powder for 3D Printing in 2023"},"content":{"rendered":"

<\/p>\n

Overview of IN939 Powder for 3D Printing<\/strong><\/h2>\n

IN939 is a high-performance nickel-based superalloy powder designed for additive manufacturing of critical components needing exceptional mechanical properties at high temperatures. This article provides a comprehensive guide to IN939 powder for 3D printing applications across aerospace, automotive, energy and industrial sectors.<\/p>\n

Key aspects covered include IN939 composition, properties, print parameters, applications, specifications, suppliers, handling, inspection, comparisons to alternatives, advantages and limitations, and frequently asked questions. Quantitative data is presented in easy-to-reference tables.<\/p>\n

Composition of IN939 Powder<\/strong><\/h3>\n

IN939 has a complex precipitation hardening alloy composition:<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n
\u042d\u043b\u0435\u043c\u0435\u043d\u0442<\/th>\n\u0412\u0435\u0441\u043e\u0432\u044b\u0435 %<\/th>\n\u0426\u0435\u043b\u044c<\/th>\n<\/tr>\n<\/thead>\n
\u041d\u0438\u043a\u0435\u043b\u044c<\/td>\n\u0411\u0430\u043b\u0430\u043d\u0441<\/td>\nPrincipal matrix element<\/td>\n<\/tr>\n
\u0425\u0440\u043e\u043c<\/td>\n15 – 18<\/td>\n\u041a\u043e\u0440\u0440\u043e\u0437\u0438\u0439\u043d\u0430\u044f \u0443\u0441\u0442\u043e\u0439\u0447\u0438\u0432\u043e\u0441\u0442\u044c<\/td>\n<\/tr>\n
\u0410\u043b\u044e\u043c\u0438\u043d\u0438\u0439<\/td>\n3.8 – 4.8<\/td>\n\u0423\u043f\u0440\u043e\u0447\u043d\u0435\u043d\u0438\u0435 \u043e\u0441\u0430\u0434\u043a\u0430\u043c\u0438<\/td>\n<\/tr>\n
\u0422\u0438\u0442\u0430\u043d<\/td>\n0.9 – 1.4<\/td>\n\u0423\u043f\u0440\u043e\u0447\u043d\u0435\u043d\u0438\u0435 \u043e\u0441\u0430\u0434\u043a\u0430\u043c\u0438<\/td>\n<\/tr>\n
\u041a\u043e\u0431\u0430\u043b\u044c\u0442<\/td>\n12 – 15<\/td>\nSolid solution strengthening<\/td>\n<\/tr>\n
\u0422\u0430\u043d\u0442\u0430\u043b<\/td>\n3.8 – 4.8<\/td>\nCarbide former<\/td>\n<\/tr>\n
\u0423\u0433\u043b\u0435\u0440\u043e\u0434\u0430<\/td>\n0.05 – 0.15<\/td>\nCarbide former<\/td>\n<\/tr>\n
\u0411\u043e\u0440<\/td>\n0.006 – 0.012<\/td>\nGrain boundary strengthener<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Trace quantities of zirconium, magnesium and sulphur are also added for enhanced properties.<\/p>\n

Properties of IN939 Powder<\/strong><\/h3>\n

IN939 possesses an exceptional combination of properties:<\/p>\n\n\n\n\n\n\n\n\n\n\n\n
\u0418\u043c\u0443\u0449\u0435\u0441\u0442\u0432\u043e<\/th>\n\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435<\/th>\n<\/tr>\n<\/thead>\n
\u0432\u044b\u0441\u043e\u043a\u0430\u044f \u043f\u0440\u043e\u0447\u043d\u043e\u0441\u0442\u044c<\/td>\nExcellent tensile and creep rupture strength up to 1050\u00a1\u00abC<\/td>\n<\/tr>\n
\u0422\u0435\u0440\u043c\u0438\u0447\u0435\u0441\u043a\u0430\u044f \u0441\u0442\u0430\u0431\u0438\u043b\u044c\u043d\u043e\u0441\u0442\u044c<\/td>\nStrength maintained up to 1000\u00a1\u00abC<\/td>\n<\/tr>\n
Creep resistance<\/td>\nHigh stress-rupture life at high temperatures<\/td>\n<\/tr>\n
\u041a\u043e\u0440\u0440\u043e\u0437\u0438\u0439\u043d\u0430\u044f \u0443\u0441\u0442\u043e\u0439\u0447\u0438\u0432\u043e\u0441\u0442\u044c<\/td>\nForms protective Cr2O3 oxide scale<\/td>\n<\/tr>\n
Thermal fatigue resistance<\/td>\nResists cracking during thermal cycling<\/td>\n<\/tr>\n
Phase stability<\/td>\nMicrostructure stable after prolonged exposures<\/td>\n<\/tr>\n
\u041a\u043e\u0440\u0440\u043e\u0437\u0438\u043e\u043d\u043d\u0430\u044f \u0441\u0442\u043e\u0439\u043a\u043e\u0441\u0442\u044c<\/td>\nResistant to hot corrosion, oxidation, sulfidation<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

The properties enable use under extreme thermal and mechanical loads.<\/p>\n

3D Printing Parameters for IN939 Powder<\/strong><\/h3>\n

Typical AM processing parameters for IN939 include:<\/p>\n\n\n\n\n\n\n\n\n\n\n
\u041f\u0430\u0440\u0430\u043c\u0435\u0442\u0440<\/th>\nTypical value<\/th>\n\u0426\u0435\u043b\u044c<\/th>\n<\/tr>\n<\/thead>\n
Layer thickness<\/td>\n20-50 \u00c3\u0153m<\/td>\nResolution vs build speed<\/td>\n<\/tr>\n
Laser power<\/td>\n250-500 W<\/td>\nSufficient melting without evaporation<\/td>\n<\/tr>\n
Scan speed<\/td>\n800-1200 mm\/s<\/td>\nDensity vs production rate<\/td>\n<\/tr>\n
Hatch spacing<\/td>\n100-200 \u00c3\u00d7m<\/td>\nMechanical properties<\/td>\n<\/tr>\n
Support structure<\/td>\n\u041c\u0438\u043d\u0438\u043c\u0443\u043c<\/td>\nEasy removal<\/td>\n<\/tr>\n
Hot isostatic pressing<\/td>\n1160\u00a1\u00abC, 100 MPa, 3h<\/td>\nEliminate porosity<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Parameters are optimized for attributes like density, microstructure, build rate, and post-processing requirements.<\/p>\n

Applications of 3D Printed IN939 Parts<\/strong><\/h3>\n

Additively manufactured IN939 components serve critical applications including:<\/p>\n\n\n\n\n\n\n\n\n
\u041f\u0440\u043e\u043c\u044b\u0448\u043b\u0435\u043d\u043d\u043e\u0441\u0442\u044c<\/th>\n\u041a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u044b<\/th>\n<\/tr>\n<\/thead>\n
\u0410\u044d\u0440\u043e\u043a\u043e\u0441\u043c\u0438\u0447\u0435\u0441\u043a\u0430\u044f \u043e\u0442\u0440\u0430\u0441\u043b\u044c<\/td>\n\u0420\u0430\u0431\u043e\u0447\u0438\u0435 \u043b\u043e\u043f\u0430\u0442\u043a\u0438 \u0442\u0443\u0440\u0431\u0438\u043d, \u0441\u043e\u043f\u043b\u043e\u0432\u044b\u0435 \u043b\u043e\u043f\u0430\u0442\u043a\u0438, \u043a\u0430\u043c\u0435\u0440\u044b \u0441\u0433\u043e\u0440\u0430\u043d\u0438\u044f<\/td>\n<\/tr>\n
\u0412\u044b\u0440\u0430\u0431\u043e\u0442\u043a\u0430 \u044d\u043b\u0435\u043a\u0442\u0440\u043e\u044d\u043d\u0435\u0440\u0433\u0438\u0438<\/td>\nHot gas path parts, heat exchangers<\/td>\n<\/tr>\n
\u0410\u0432\u0442\u043e\u043c\u043e\u0431\u0438\u043b\u044c\u043d\u044b\u0439<\/td>\nTurbocharger wheels, valves<\/td>\n<\/tr>\n
\u0425\u0438\u043c\u0438\u0447\u0435\u0441\u043a\u0430\u044f \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0430<\/td>\nPumps, valves, reaction vessels<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Benefits over conventionally processed IN939 include complex geometries and reduced lead time.<\/p>\n

Specifications of IN939 Powder for 3D Printing<\/strong><\/h3>\n

IN939 powder for AM must meet exacting specifications:<\/p>\n\n\n\n\n\n\n\n\n\n\n\n
\u041f\u0430\u0440\u0430\u043c\u0435\u0442\u0440<\/th>\n\u0421\u043f\u0435\u0446\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u044f<\/th>\n<\/tr>\n<\/thead>\n
\u0420\u0430\u0437\u043c\u0435\u0440 \u0447\u0430\u0441\u0442\u0438\u0446<\/td>\n15-45 \u00c3\u00d7m typical<\/td>\n<\/tr>\n
\u0424\u043e\u0440\u043c\u0430 \u0447\u0430\u0441\u0442\u0438\u0446<\/td>\nSpherical morphology<\/td>\n<\/tr>\n
\u041a\u0430\u0436\u0443\u0449\u0430\u044f\u0441\u044f \u043f\u043b\u043e\u0442\u043d\u043e\u0441\u0442\u044c<\/td>\n> 4 g\/cc<\/td>\n<\/tr>\n
\u041f\u043b\u043e\u0442\u043d\u043e\u0441\u0442\u044c \u043f\u0440\u0438 \u0443\u0442\u0440\u0430\u043c\u0431\u043e\u0432\u043a\u0435<\/td>\n> 6 g\/cc<\/td>\n<\/tr>\n
\u0421\u043a\u043e\u0440\u043e\u0441\u0442\u044c \u043f\u043e\u0442\u043e\u043a\u0430 \u0445\u043e\u043b\u043b\u0430<\/td>\n> 23 sec for 50 g<\/td>\n<\/tr>\n
\u0427\u0438\u0441\u0442\u043e\u0442\u0430<\/td>\n>99.9%<\/td>\n<\/tr>\n
\u0421\u043e\u0434\u0435\u0440\u0436\u0430\u043d\u0438\u0435 \u043a\u0438\u0441\u043b\u043e\u0440\u043e\u0434\u0430<\/td>\n<100 \u0447\u0430\u0441\u0442\u0435\u0439 \u043d\u0430 \u043c\u0438\u043b\u043b\u0438\u043e\u043d<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Tighter tolerances, custom size distributions, and controlled impurity levels available.<\/p>\n

Suppliers of IN939 Powder<\/strong><\/h3>\n

Reputable suppliers of IN939 powder include:<\/p>\n\n\n\n\n\n\n\n\n\n\n
\u041f\u043e\u0441\u0442\u0430\u0432\u0449\u0438\u043a<\/th>\n\u041c\u0435\u0441\u0442\u043e\u043f\u043e\u043b\u043e\u0436\u0435\u043d\u0438\u0435<\/th>\n<\/tr>\n<\/thead>\n
Sandvik Osprey<\/td>\n\u0421\u043e\u0435\u0434\u0438\u043d\u0451\u043d\u043d\u043e\u0435 \u041a\u043e\u0440\u043e\u043b\u0435\u0432\u0441\u0442\u0432\u043e<\/td>\n<\/tr>\n
Carpenter Additive<\/td>\n\u0421\u0428\u0410<\/td>\n<\/tr>\n
Praxair<\/td>\n\u0421\u0428\u0410<\/td>\n<\/tr>\n
AP&C<\/td>\n\u041a\u0430\u043d\u0430\u0434\u0430<\/td>\n<\/tr>\n
\u042d\u0440\u0430\u0441\u0442\u0430\u043b\u044c<\/td>\n\u0428\u0432\u0435\u0446\u0438\u044f<\/td>\n<\/tr>\n
AMETEK<\/td>\n\u0421\u0428\u0410<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Pricing for IN939 powder ranges from $110\/kg to over $220\/kg based on quality and order volume.<\/p>\n

Handling and Storage of IN939 Powder<\/strong><\/h3>\n

As a reactive powder, careful handling of IN939 is needed:<\/p>\n

    \n
  • Store sealed containers in a cool, inert atmosphere<\/li>\n
  • Prevent contact with moisture, oxygen, acids<\/li>\n
  • Use properly grounded equipment<\/li>\n
  • Avoid dust accumulation to minimize explosion risk<\/li>\n
  • Local exhaust ventilation recommended<\/li>\n
  • Wear appropriate PPE while handling<\/li>\n<\/ul>\n

    Proper techniques and controls prevent IN939 powder oxidation or contamination.<\/p>\n

    Inspection and Testing of IN939 Powder<\/strong><\/h3>\n

    IN939 powder is validated using:<\/p>\n\n\n\n\n\n\n\n\n\n\n
    \u041c\u0435\u0442\u043e\u0434<\/th>\nParameters Tested<\/th>\n<\/tr>\n<\/thead>\n
    \u0413\u0440\u0430\u043d\u0443\u043b\u043e\u043c\u0435\u0442\u0440\u0438\u0447\u0435\u0441\u043a\u0438\u0439 \u0430\u043d\u0430\u043b\u0438\u0437<\/td>\n\u0420\u0430\u0441\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u0438\u0435 \u0440\u0430\u0437\u043c\u0435\u0440\u0430 \u0447\u0430\u0441\u0442\u0438\u0446<\/td>\n<\/tr>\n
    \u0421\u043a\u0430\u043d\u0438\u0440\u0443\u044e\u0449\u0430\u044f \u044d\u043b\u0435\u043a\u0442\u0440\u043e\u043d\u043d\u0430\u044f \u043c\u0438\u043a\u0440\u043e\u0441\u043a\u043e\u043f\u0438\u044f<\/td>\nParticle morphology<\/td>\n<\/tr>\n
    EDX<\/td>\nChemistry and composition<\/td>\n<\/tr>\n
    XRD<\/td>\nPhases present<\/td>\n<\/tr>\n
    Pycnometry<\/td>\n\u041f\u043b\u043e\u0442\u043d\u043e\u0441\u0442\u044c<\/td>\n<\/tr>\n
    \u0421\u043a\u043e\u0440\u043e\u0441\u0442\u044c \u043f\u043e\u0442\u043e\u043a\u0430 \u0445\u043e\u043b\u043b\u0430<\/td>\n\u0422\u0435\u043a\u0443\u0447\u0435\u0441\u0442\u044c \u043f\u043e\u0440\u043e\u0448\u043a\u0430<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    Testing per applicable ASTM standards ensures batch consistency.<\/p>\n

    Comparing IN939 to Alternative Alloy Powders<\/strong><\/h3>\n

    IN939 compares to other Ni-based superalloys as:<\/p>\n\n\n\n\n\n\n\n\n
    \u0421\u043f\u043b\u0430\u0432<\/th>\n\u0412\u044b\u0441\u043e\u043a\u043e\u0442\u0435\u043c\u043f\u0435\u0440\u0430\u0442\u0443\u0440\u043d\u0430\u044f \u043f\u0440\u043e\u0447\u043d\u043e\u0441\u0442\u044c<\/th>\n\u0426\u0435\u043d\u0430<\/th>\n\u0412\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u043f\u0435\u0447\u0430\u0442\u0438<\/th>\n\u041f\u043b\u0430\u0441\u0442\u0438\u0447\u043d\u043e\u0441\u0442\u044c<\/th>\n<\/tr>\n<\/thead>\n
    IN939<\/td>\n\u041e\u0442\u043b\u0438\u0447\u043d\u044b\u0439<\/td>\n\u0412\u044b\u0441\u043e\u043a<\/td>\n\u041e\u0442\u043b\u0438\u0447\u043d\u044b\u0439<\/td>\n\u041d\u0438\u0437\u043a\u0438\u0439<\/td>\n<\/tr>\n
    IN738<\/td>\n\u0425\u043e\u0440\u043e\u0448\u043e<\/td>\n\u0421\u0440\u0435\u0434\u043d\u0438\u0439<\/td>\n\u041e\u0442\u043b\u0438\u0447\u043d\u044b\u0439<\/td>\n\u0421\u0440\u0435\u0434\u043d\u0438\u0439<\/td>\n<\/tr>\n
    IN718<\/td>\n\u0421\u043f\u0440\u0430\u0432\u0435\u0434\u043b\u0438\u0432\u043e<\/td>\n\u041d\u0438\u0437\u043a\u0438\u0439<\/td>\n\u0425\u043e\u0440\u043e\u0448\u043e<\/td>\n\u041e\u0442\u043b\u0438\u0447\u043d\u044b\u0439<\/td>\n<\/tr>\n
    \u0425\u0430\u0441\u0442\u0435\u043b\u043b\u043e\u0439\u00ae X<\/td>\n\u041e\u0442\u043b\u0438\u0447\u043d\u044b\u0439<\/td>\n\u0412\u044b\u0441\u043e\u043a<\/td>\n\u0421\u043f\u0440\u0430\u0432\u0435\u0434\u043b\u0438\u0432\u043e<\/td>\n\u0421\u0440\u0435\u0434\u043d\u0438\u0439<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    For balanced properties and processability, IN939 supersedes alternatives like IN718 or Hastelloy X.<\/p>\n

    Pros and Cons of IN939 Powder for 3D Printing<\/strong><\/h3>\n\n\n\n\n\n\n\n\n\n
    \u041f\u0440\u0435\u0438\u043c\u0443\u0449\u0435\u0441\u0442\u0432\u0430<\/th>\n\u041c\u0438\u043d\u0443\u0441\u044b<\/th>\n<\/tr>\n<\/thead>\n
    Exceptional high temperature strength<\/td>\nExpensive compared to IN718<\/td>\n<\/tr>\n
    Excellent oxidation and creep resistance<\/td>\nSignificant parameter optimization needed<\/td>\n<\/tr>\n
    Complex geometries feasible<\/td>\nLimited room temperature ductility<\/td>\n<\/tr>\n
    Faster processing than cast\/wrought<\/td>\nControlled storage and handling environment<\/td>\n<\/tr>\n
    Comparable properties to cast alloy<\/td>\nDifficult to machine after printing<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    IN939 enables high-performance printed parts but with higher costs and controlled processing needs.<\/p>\n

    Frequently Asked Questions about IN939 Powder for 3D Printing<\/strong><\/h2>\n

    Q: What particle size range works best for printing IN939?<\/strong><\/p>\n

    A: A particle size range of 15-45 microns provides good flowability combined with high resolution and density. Finer particles below 10 microns can improve density and surface finish.<\/p>\n

    Q: Does IN939 require any post-processing after 3D printing?<\/strong><\/p>\n

    A: Post processes like hot isostatic pressing, heat treatment, and machining are usually needed to eliminate porosity, relieve stresses, and achieve final tolerances and surface finish.<\/p>\n

    Q: What precision can be achieved with IN939 printed parts?<\/strong><\/p>\n

    A: After post-processing, dimensional accuracy and surface finish comparable to CNC machined parts can be achieved with IN939 AM components.<\/p>\n

    Q: Are support structures necessary for printing IN939 powder?<\/strong><\/p>\n

    A: Minimal supports are recommended for complex channels and overhangs to prevent deformation and facilitate easy removal. IN939 powder has good flowability.<\/p>\n

    Q: What alloy powder is the closest alternative to IN939 for AM?<\/strong><\/p>\n

    A: IN738 is the closest alternative in terms of balanced properties and maturity for additive manufacturing. Other alloys like IN718 or Hastelloy X have some trade-offs.<\/p>\n

    Q: Is IN939 compatible with direct metal laser sintering (DMLS)?<\/strong><\/p>\n

    A: Yes, IN939 is readily processable by major powder bed fusion techniques including DMLS along with selective laser melting (SLM) and electron beam melting (EBM).<\/p>\n

    Q: What density is achievable with 3D printed IN939 components?<\/strong><\/p>\n

    A: With optimized parameters, densities over 99% are achievable, matching properties of traditionally processed IN939 products.<\/p>\n

    Q: How do the properties of printed IN939 compare to cast alloy?<\/strong><\/p>\n

    A: Additively manufactured IN939 exhibits comparable or better mechanical properties and microstructure compared to conventional cast and wrought forms.<\/p>\n

    Q: What defects can occur when printing with IN939 powder?<\/strong><\/p>\n

    A: Potential defects are cracking, distortion, porosity, surface roughness, incomplete fusion etc. Most can be prevented by proper parameter optimization and powder quality.<\/p>\n

    Q: Is hot isostatic pressing (HIP) mandatory for IN939 AM parts?<\/strong><\/p>\n

    A: HIP eliminates internal voids and improves fatigue resistance. For less demanding applications, heat treatment alone may suffice instead of HIP.<\/p>\n

    \n
    <\/div>\n<\/div>\n

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    Overview of IN939 Powder for 3D Printing IN939 is a high-performance nickel-based superalloy powder designed for additive manufacturing of critical components needing exceptional mechanical properties at high temperatures. This article provides a comprehensive guide to IN939 powder for 3D printing applications across aerospace, automotive, energy and industrial sectors. Key aspects covered include IN939 composition, properties,…<\/p>","protected":false},"featured_media":1757,"parent":0,"template":"","meta":{"_acf_changed":false,"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":""},"product-category":[119,120],"class_list":["post-3876","product","type-product","status-publish","has-post-thumbnail","hentry","product-category-3d-printing-metal-powder","product-category-high-temperature-alloy-powder"],"acf":[],"taxonomy_info":{"product-category":[{"value":119,"label":"3D Printing Metal Powder"},{"value":120,"label":"High Temperature Alloy Powder"}]},"featured_image_src_large":["https:\/\/3dpmetal.com\/wp-content\/uploads\/2024\/02\/IN939.png",400,300,false],"author_info":[],"comment_info":"","_links":{"self":[{"href":"https:\/\/3dpmetal.com\/ru\/wp-json\/wp\/v2\/product\/3876","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/3dpmetal.com\/ru\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/3dpmetal.com\/ru\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/3dpmetal.com\/ru\/wp-json\/wp\/v2\/media\/1757"}],"wp:attachment":[{"href":"https:\/\/3dpmetal.com\/ru\/wp-json\/wp\/v2\/media?parent=3876"}],"wp:term":[{"taxonomy":"product-category","embeddable":true,"href":"https:\/\/3dpmetal.com\/ru\/wp-json\/wp\/v2\/product-category?post=3876"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}